| 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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| 05/13/1980 | US4202739 Electrochemical removal of material from metallic work |
| 05/13/1980 | CA1077432A1 Power supply for electrochemical machining |
| 04/30/1980 | EP0010276A1 Method and device for machining synthetic polycrystalline diamond and use of the diamond machined according to this method |
| 04/08/1980 | US4197443 Method and apparatus for forming diffused cooling holes in an airfoil |
| 01/15/1980 | CA1069855A1 Electroerosion method and electrode device to generate holes within a solid metal workpiece |
| 01/09/1980 | EP0006827A1 Method of working polycristalline synthetic diamond |
| 11/13/1979 | US4174268 Electrode guide |
| 10/30/1979 | CA1065412A1 Method of and apparatus for electrical discharge machining |
| 10/09/1979 | US4170528 Method of balancing a rotatable element |
| 08/21/1979 | CA1060841A1 Corona apparatus |
| 07/10/1979 | US4160314 Degraining, a three step process to obtain propellant samples from case bonded motors |
| 06/26/1979 | US4159407 Methods and apparatus for electrically machining a work piece |
| 04/03/1979 | US4147425 Photographic processing roller having a surface roughened by electric discharge machining |
| 03/27/1979 | US4146770 Method for controlling an electro-discharge machine tool |
| 03/20/1979 | US4144936 Down hole milling or grinding system |
| 08/29/1978 | US4110190 Apparatus for machining electrically conducting substances by electrochemical attack |
| 08/15/1978 | US4107504 Method and apparatus for controlling an electro-discharge machine tool |
| 08/01/1978 | US4104503 Method of electroerosion and an apparatus for producing cavities inside a solid metal component |
| 07/11/1978 | US4100388 Electroerosion method and apparatus for machining undercut channels in a workpiece |
| 07/04/1978 | US4098659 Electrochemical milling process to prevent localized heating |
| 06/20/1978 | US4096371 Method of and apparatus for electrical discharge machining |
| 05/09/1978 | US4088557 Electrode assembly and machine for small-hole electrochemical drilling |
| 04/11/1978 | US4083760 Electrolytic precision drilling device and process |
| 02/14/1978 | US4073710 Method of machining electrically conducting substances by electrochemical attack |
| 11/22/1977 | US4059497 Corona apparatus |
| 11/08/1977 | US4057475 Method of forming a plurality of articles |
| 10/04/1977 | US4052284 Apparatus for electrochemically forming a plurality of articles |
| 08/30/1977 | US4045311 Process for making a minute hole |
| 08/23/1977 | US4043883 Electrolytic precision drilling process |
| 05/24/1977 | US4025338 Electrophotographic, protective layer of nitrocellulose and a methyl methacrylate polymer |
| 04/12/1977 | US4017706 Method of providing a torque motor with air gaps of equal length |
| 01/25/1977 | US4004992 Drilling |
| 01/11/1977 | US4002518 Helically fluted deep hole cathode and method of making same |
| 01/04/1977 | US4001538 Method and apparatus for producing smooth surfaces |
| 11/30/1976 | US3995134 Apparatus for electric discharge machining of holes |
| 11/09/1976 | US3990959 Process for electro-chemical machining |
| 10/12/1976 | US3984911 Process for manufacturing an electrode for electrolytically forming a groove pattern in an arcuate surface of an article |
| 08/17/1976 | US3975609 Vacuum delay valve |
| 07/20/1976 | US3970538 Apparatus for electro-chemical milling of turbine blade edges |
| 07/13/1976 | US3968562 Method of manufacturing a semiconductor device |
| 06/15/1976 | US3963894 Turbine-nozzle manufacturing apparatus |
| 06/08/1976 | US3962557 Waste metal removal in E.D.M. machining |
| 04/20/1976 | US3952179 Rotary cutting die and method for its production |
| 03/02/1976 | US3941970 Feed roll and method of imparting a rough texture to the surface thereof |
| 02/17/1976 | US3939321 Portable electrical discharge metalworking machine |