| Patents for B23P 15 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass (23,391) |
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| 08/09/1988 | CA1240132A1 Manufacture of pistons |
| 08/02/1988 | US4761191 Method of forming closely sized openings |
| 07/28/1988 | WO1988005520A1 Plate heat exchanger with identical frame plate and pressure plate |
| 07/27/1988 | EP0275975A2 Ultrathin laminated oxide coatings |
| 07/26/1988 | CA1239519A1 Molding method and apparatus |
| 07/19/1988 | US4758451 Process for producing coated molded bodies |
| 07/19/1988 | US4758005 Piston rings with a gap seal |
| 07/14/1988 | DE3713191C1 Method for the manufacture of a forged head of a two-part piston for internal combustion engines |
| 07/12/1988 | US4756373 Rock drilling bit and a method of producing the same |
| 07/07/1988 | DE3644599A1 Helical compression spring |
| 07/07/1988 | DE3641944A1 Process for producing concave mirrors |
| 07/05/1988 | US4755399 Process for the production of a cutting tool |
| 07/05/1988 | US4755340 Method for producing packs of blades used for cutting crystal bars into wafers |
| 07/05/1988 | US4754908 Process for preparing a tape guide cylinder |
| 07/05/1988 | US4754540 Method of making bearing block for robotic manipulator |
| 06/30/1988 | DE3643705A1 Apparatus for assembling cooling-element parts |
| 06/29/1988 | EP0272305A1 Apparatus and method for forming an integral object from laminations. |
| 06/29/1988 | CN87211047U Thick helical fin continuous welding machine |
| 06/28/1988 | US4753849 Porous coating for enhanced tubes |
| 06/28/1988 | US4753305 Cutter mounting for drag bits |
| 06/28/1988 | US4752995 Manufacture of pistons |
| 06/21/1988 | US4752352 Apparatus and method for forming an integral object from laminations |
| 06/21/1988 | CA1238178A1 Apparatus for assembling heat exchangers |
| 06/21/1988 | CA1238163A1 Composite plate method of manufacturing injection molding manifold |
| 06/21/1988 | CA1238161A1 Manufacturing method for selected gate configuration injection molding nozzles |
| 06/14/1988 | US4751123 Process for manufacturing a turbine or compressor wheel made of composite material and wheel thus obtained |
| 06/14/1988 | US4750949 Grain-oriented electrical steel sheet having stable magnetic properties resistant to stress-relief annealing, and method and apparatus for producing the same |
| 06/08/1988 | CN86108414A Worm screw and worm-gear drive with antifriction balls |
| 06/07/1988 | US4749629 Ultrathin laminated oxide coatings and methods |
| 06/07/1988 | CA1237576A1 Method for machining clutch gear for automobile transmission |
| 06/01/1988 | EP0269422A2 Engine crankshaft |
| 05/31/1988 | US4747208 Device for assembling return bend to coil |
| 05/31/1988 | CA1237297A1 Extrusion die for extruding gears and method of making same |
| 05/31/1988 | CA1237273A1 Tool with soldered tip |
| 05/25/1988 | EP0268505A1 Production method for a combustion chamber ring which creates a cooling film |
| 05/25/1988 | CN85106691B Heat transfer wall for boiling liquids and processes of manufacture |
| 05/24/1988 | US4746563 Titanium nitrides, carbides and oxides |
| 05/24/1988 | US4745670 Method for making chemical laser nozzle arrays |
| 05/19/1988 | WO1988003457A1 Process for the manufacture of milling cutters incorporating macrograins of abrasive material, such as silicon carbide |
| 05/19/1988 | WO1988003450A1 Method of producing rack-and-pinion steering arrangements with a variable gear ratio |
| 05/19/1988 | DE3638987A1 Construction for heating and cooling elements for utilising the heat conduction in a vacuum |
| 05/18/1988 | EP0267718A2 Airfoil with diffused cooling holes and method and apparatus for making the same |
| 05/18/1988 | EP0267399A1 Method of producing rack-and-pinion steering arrangements with a variable gear ratio |
| 05/17/1988 | US4744505 Method of making a heat exchanger |
| 05/11/1988 | EP0266954A2 Twisted hollow airfoil with non-twisted internal support ribs |
| 05/10/1988 | US4743137 Tool having a hard metal part with a solder and lining type connection |
| 05/10/1988 | CA1236499A1 Honeycomb seal structure |
| 05/04/1988 | EP0266269A1 Process for manufacturing a fuel distribution pipe |
| 05/04/1988 | EP0265919A1 Light-weight engine valve and method of producing the same |
| 04/27/1988 | CN87106857A Making process of high speed steel compound template cutters |
| 04/26/1988 | US4740410 Micromechanical elements and methods for their fabrication |
| 04/21/1988 | WO1988002792A1 Process for depositing layers of diamond |
| 04/21/1988 | DE3632574A1 Method of producing an injection moulding tool |
| 04/19/1988 | US4738014 Apparatus for moving plate fin coils from station to station |
| 04/13/1988 | CN87105900A Installing process of pipe in steam generator |
| 04/12/1988 | US4736828 Clutch discs for a fluid friction clutch and process for making same |
| 04/12/1988 | US4736509 Method of making water heater construction |
| 04/12/1988 | US4736508 Process of manufacturing vacuum tips particularly for vacuum handling systems |
| 04/12/1988 | US4736481 Method of manufacturing screw fasteners |
| 04/12/1988 | CA1235072A1 Fabricated blade with spanwise cooling passages for gas turbine |
| 04/12/1988 | CA1235069A1 Dual alloy radial turbine rotor with hub material exposed in saddle regions of blade ring |
| 04/07/1988 | DE3724513A1 Shock and vibration damper |
| 04/07/1988 | DE3636798A1 Method for the production of one-piece sintered cutting tools with a shank |
| 04/06/1988 | EP0262490A1 Method of manufacturing an injection-moulding manifold |
| 04/05/1988 | CA1234685A1 Method and apparatus for manufacturing innerspring constructions |
| 03/30/1988 | EP0262011A1 Method for placing tubes in a steam generator |
| 03/30/1988 | EP0261523A2 Method for making an injection moulding tool |
| 03/22/1988 | US4732492 Bearing ring for supporting items on solid or hollow cylindrical parts |
| 03/22/1988 | CA1234282A1 Method of changing fuel pump on internal combustion engine and apparatus for use therein |
| 03/16/1988 | CN87105451A Surface condenser and the method of making its corrugated radiating pipe |
| 03/08/1988 | US4729546 Titanium engine valve and method of making |
| 03/02/1988 | EP0257899A2 Cubic boron nitride abrasive body |
| 03/01/1988 | US4727636 Manufacturing method for an elliptic gear |
| 03/01/1988 | CA1233347A1 Printed circuit board drill and method of manufacture |
| 02/24/1988 | EP0256693A2 Mould set for plastics moulding machines |
| 02/23/1988 | CA1233124A1 Steam turbine diaphragm |
| 02/16/1988 | US4724728 Carbide body embedded with abrasive |
| 02/10/1988 | CN86105657A Gear speed reducer and its production method |
| 02/10/1988 | CN86104871A Conical gear pair with curved teeth with graduation cone synthetic position-changing coefficient sum being negative value |
| 02/09/1988 | US4723350 Method of producing oil seal |
| 02/09/1988 | CA1232416A1 Drill point milling machine and method |
| 02/03/1988 | EP0254827A2 A process of attaching a friction lining to a metal backing plate to produce brake lining |
| 02/02/1988 | US4722124 Method of manufacturing the writing tip of a ball point pen |
| 01/26/1988 | CA1231834A1 Car stabilizer and a manufacturing method therefor |
| 01/26/1988 | CA1231829A1 Apparatus for assembling tubes in a heat exchanger |
| 01/21/1988 | DE3623175A1 Method for the production of a groove milling cutter and groove milling cutter produced by this method |
| 01/20/1988 | EP0253061A2 Method of producing piston rings |
| 01/19/1988 | US4720437 Surface-coated cemented carbide article or part |
| 01/19/1988 | US4719677 Crankcase manufacturing method |
| 01/11/1988 | EP0167523A4 Composite pistons and method of manufacturing thereof. |
| 01/07/1988 | EP0250865A1 Cutting tool |
| 12/29/1987 | US4716268 Method and apparatus for producing bimetallic contacts, especially bimetallic welded contacts |
| 12/29/1987 | US4715250 Rotary cutting cylinder and method of making same |
| 12/22/1987 | US4714385 Polycrystalline diamond and CBN cutting tools |
| 12/22/1987 | US4713867 Piston rings with a gap seal |
| 12/22/1987 | CA1230473A1 Method of manufacturing injection molding manifold with plugs |
| 12/17/1987 | WO1987007538A1 Apparatus and method for forming an integral object from laminations |
| 12/17/1987 | DE3620115A1 Contour milling device |
| 12/15/1987 | US4713286 Printed circuit board drill and method of manufacture |
| 12/15/1987 | US4712941 Tapered piston pin |