| Patents for B23H 9 - Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects (3,245) |
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| 07/18/1990 | EP0176603B1 Device for forming an initial hole in a discharge machining apparatus |
| 07/17/1990 | US4941955 Forming thin metal foils from metal sheets, positioning electrodes, electrolytes flowing over surfaces |
| 07/04/1990 | EP0375774A1 Device for electro-erosive piercing of openings in parts |
| 06/26/1990 | US4937415 Examination slide grid system |
| 06/26/1990 | US4936608 Marking of industrial products or individual parts thereof |
| 06/19/1990 | US4934759 Apparatus for and method of manufacturing brush seals |
| 06/13/1990 | EP0373154A1 Electrical discharge methods and apparatus therefor |
| 06/06/1990 | EP0371962A1 Electro-discharge machining apparatus |
| 06/06/1990 | EP0173749B1 Perforating apparatus relying upon electric discharge machining |
| 05/30/1990 | EP0370707A1 Electrical discharge apparatus |
| 05/17/1990 | WO1990005039A1 Method of processing orifices |
| 05/14/1990 | EP0353301A4 Device for making holes in work pieces by electro-erosion. |
| 05/02/1990 | EP0366466A1 Combined EDM and ultrasonic drilling |
| 05/02/1990 | EP0366415A1 Method and apparatus for the production of apertures |
| 05/02/1990 | EP0365679A1 Initial hole machining unit for wire cut electric discharge machines |
| 05/01/1990 | US4922076 Electro-discharge machining electrode |
| 04/25/1990 | CA2001275A1 Method and apparatus for the production of sized apertures |
| 04/11/1990 | EP0363142A1 Fuel injection nozzles for internal combustion engines |
| 04/10/1990 | US4916282 Device for cutting the wall of the tubular piece by electrical discharge machining |
| 02/28/1990 | EP0356063A2 Method of producing a multi-apertured workpiece |
| 02/22/1990 | WO1990001390A1 Working of electrically conductive materials by electrical erosion |
| 02/13/1990 | US4900890 Electric discharge machining method and apparatus for machining a microshaft |
| 02/07/1990 | EP0353301A1 Device for making holes in work pieces by electro-erosion |
| 01/31/1990 | EP0352926A1 Fuel injectors for internal combustion engines |
| 01/17/1990 | CN1038782A Electrolysis combined with radical, tangential and diagonal shaving technology |
| 01/17/1990 | CN1006449B Electrode for machining film coding passages |
| 01/03/1990 | EP0349372A1 Device for the control of the motion of a tool such as in particular an electroerosion electrode |
| 12/26/1989 | US4888863 Method and apparatus for producing turbine blade roots |
| 12/07/1989 | DE3823888C1 Equipment for working on components in inaccessible places in a nuclear reactor pressure container |
| 11/29/1989 | EP0343212A1 Method and apparatus for manufacturing slow-wave structures for traveling-wave tubes |
| 11/23/1989 | DE3817259A1 Method and device for machining bores |
| 11/15/1989 | CN1037104A Method and apparatus for producing turbine blade roots |
| 11/07/1989 | US4879457 Method for etching a bar code on metal |
| 09/27/1989 | CN1035787A Mechanical device of copying spark machine for machining the base face of needle-valve body of an oil nozzle |
| 09/26/1989 | US4870243 Electrical discharge methods and apparatus therefor |
| 09/26/1989 | CA1261005A1 Electrode for machining film cooling passages |
| 09/20/1989 | CN2044526U Gds-type high-speed electric spark apparatus for processing deep hole |
| 08/29/1989 | US4860616 Method and apparatus for the manufacture of rotary sheet dies |
| 08/23/1989 | CN1034883A Machining method of polycrystalline diamond by using mechano-electrical pulse |
| 08/16/1989 | EP0327657A1 Method for making a bladed rotor |
| 08/16/1989 | EP0327621A1 Electro-discharge machining electrode and method of forming |
| 08/15/1989 | US4857696 Laser/EDM drilling manufacturing cell |
| 08/10/1989 | WO1989007033A1 Initial hole machining unit for wire cut electric discharge machines |
| 08/10/1989 | WO1989007028A1 Device for electro-erosive perforation of parts |
| 08/02/1989 | EP0326349A2 Patterned plastic optical components |
| 08/01/1989 | US4852232 Nozzle fabrication technique |
| 07/25/1989 | US4851634 Device for electrical discharge piercing of holes in components |
| 07/25/1989 | US4851090 Method and apparatus for electrochemically machining airfoil blades |
| 07/25/1989 | US4850147 Electrode shaping |
| 07/11/1989 | US4847464 Tool for forming a spinneret capillary |
| 07/11/1989 | US4846944 Beryllium mirrors, etching with phosphoric acid |
| 07/11/1989 | EP0327621A4 Electro-discharge machining electrode and method of forming. |
| 06/28/1989 | EP0322301A1 Process for manufacturing steel smoothcut printing elements, and device for carrying out the process |
| 06/28/1989 | CN2040017U Numerical control rotation electric spark processing machine |
| 06/20/1989 | CA1256056A1 Electrolytically deburring laminated cores under relative motion of workpiece |
| 06/07/1989 | EP0318639A1 Electrical discharge machining tool |
| 05/24/1989 | EP0317383A1 Device for cutting the wall of a tubular piece by spark machining |
| 05/18/1989 | WO1989004233A1 Method and apparatus for manufacturing slow-wave structures for traveling-wave tubes |
| 05/16/1989 | EP0375774A4 Device for electro-erosive piercing of openings in parts. |
| 05/03/1989 | EP0313642A1 An apparatus and method for electrochemically smoothing or finishing a surface of a conductive metal part |
| 04/25/1989 | US4825029 Spark erosion system for reducing the height of a honeycomb seal |
| 04/11/1989 | US4820390 Apparatus and method for continuous electrochemical machining of strip material |
| 04/11/1989 | US4819325 Method of forming electro-discharge machining electrode |
| 04/04/1989 | US4818834 Electrically conductive metal substrate |
| 03/15/1989 | EP0306902A1 Electric discharge machining method and apparatus for machining a microshaft |
| 03/01/1989 | EP0304575A2 Characterization of industrial products or their components |
| 02/28/1989 | US4808785 Method and apparatus for making diffused cooling holes in an airfoil |
| 02/22/1989 | EP0304235A2 Electrical discharge method and working fluid therefor |
| 02/15/1989 | EP0303535A1 Production method of compressor or turbine stator stages, blades and blade rows so obtained |
| 02/14/1989 | US4804814 Electron discharge machining tool |
| 01/19/1989 | DE3742568A1 Bracket with shear key |
| 01/18/1989 | EP0299143A1 Laser/EDM drilling manufacturing cell |
| 01/10/1989 | US4797189 Pressure balanced sealing pistons for cathodes in an electrolyte chamber |
| 12/29/1988 | WO1988010167A1 Process for manufacturing an electric-discharge cutting tool, electrode, and corresponding tool |
| 12/27/1988 | US4793220 Method of making a drill-shaped cutting tool and thread rolling dies |
| 12/21/1988 | EP0295452A2 Method for making a broaching tool |
| 12/20/1988 | US4792654 Method and apparatus for manufacturing slow-wave structures for traveling-wave tubes |
| 12/15/1988 | WO1988010017A1 Electro-discharge machining electrode and method of forming |
| 12/13/1988 | US4791284 Method for etching a bar code on metal |
| 12/13/1988 | US4791264 Low force wire guide for EDM machine |
| 12/07/1988 | EP0294082A2 Electrical discharge apparatus |
| 12/06/1988 | US4789447 Apparatus for working electrically conductive materials by electric erosion |
| 11/30/1988 | CN88101311A Electrodes for electrochemically machining airfoil blades |
| 11/30/1988 | CN88101230A Method and apparatus for electrochemically machining airfoil blades |
| 11/29/1988 | CA1245728A1 Electrode-tool for electroerosive drilling of holes in workpieces and methods of electroerosive drilling of holes in workpieces by such electrode-tool |
| 11/23/1988 | EP0292214A1 Electrodes for electrochemically machining blades |
| 11/23/1988 | EP0292213A1 Method and apparatus for electrochemically machining bladed disks |
| 11/23/1988 | EP0292081A1 Phase-spark-erosion device |
| 11/22/1988 | US4786777 Process and apparatus for wire electrode trimming using a laser |
| 11/22/1988 | CA1245301A1 Remotely actuated metal disintegration machining apparatus |
| 11/17/1988 | WO1988008890A1 An apparatus and method for electrochemically smoothing or finishing a surface of a conductive metal part |
| 11/02/1988 | EP0288656A2 Low force wire guide for EDM machine |
| 11/01/1988 | US4782203 Wire guide for electric discharge machine |
| 10/19/1988 | EP0286779A2 Wire guide for electric discharge machine |
| 10/05/1988 | CN87210609U Electrolytic machine for removing burr of long fuel spray nozzle |
| 09/27/1988 | US4774061 Open station corona treating system |
| 09/21/1988 | EP0283205A2 Electro-discharge machining apparatus |
| 09/21/1988 | EP0282837A2 Method for the production of an oval wheel |
| 09/20/1988 | US4772372 Accurate forming of both leading and trailing edges in single operation |
| 09/20/1988 | US4772368 Helical rotation |