| Patents for B21C 23 - Extruding metal; Impact extrusion (6,435) |
|---|
| 04/12/1977 | US4016737 High pressure press |
| 04/05/1977 | US4016008 Clad metal tubes |
| 04/05/1977 | US4015765 Formation and utilization of compound billet |
| 03/01/1977 | US4010046 Iron, silicon, copper, boron |
| 01/25/1977 | US4005255 Extruded composite section |
| 12/28/1976 | US3999415 Method and apparatus for extrusion |
| 12/21/1976 | US3998579 Device for producing externally ribbed pipes of plastic |
| 11/30/1976 | US3994149 Press for hydrostatic extrusion of tubes |
| 11/23/1976 | US3992913 Press for hydrostatic extrusion of tubes |
| 11/16/1976 | US3992303 Chloropolymer and destabilizer |
| 11/16/1976 | US3992091 Roughened imaging surface for cleaning |
| 10/26/1976 | US3987655 Method of continuously transforming solid non-ferrous metal into elongated extruded shapes |
| 10/12/1976 | US3985011 Continuous extrusion |
| 10/05/1976 | US3983731 Press for hydrostatic extrusion |
| 10/05/1976 | US3983730 Method of hydrostatic extrusion |
| 09/07/1976 | US3978702 Metal cold forming process and lubricant composition therefor |
| 08/31/1976 | US3977227 Method of cold extruding ductile cast iron tube |
| 08/31/1976 | US3977225 Forging method |
| 08/10/1976 | US3973428 Uniform land length die |
| 07/06/1976 | US3967485 Method for extruding brittle materials |
| 07/06/1976 | US3967484 Method of manufacturing a low energy-loss waveguide circuit element |
| 05/25/1976 | US3958441 Skid resistant surface and method and apparatus for forming the same |
| 05/11/1976 | US3956604 High pressure apparatus having means for detecting a leakage |
| 05/11/1976 | US3955274 Method of manufacturing a low energy-loss waveguide circuit element |
| 05/11/1976 | US3955262 Blanks for wiredrawing by impact |
| 05/04/1976 | USRE28795 Apparatus and method for continuous extrusion |
| 04/20/1976 | US3950979 Apparatus and method for tube extrusion |
| 04/06/1976 | US3948073 Apparatus and method of metal forming |
| 03/30/1976 | US3946794 Method for producing fine diameter wire from steel-titanium melts |
| 03/30/1976 | US3946584 Hydrostatic extrusion method and apparatus |
| 03/16/1976 | US3944641 Process of forming an irregular surface on the inside of a tube or pipe |
| 02/24/1976 | US3939682 Method and machine for use in hydrostatic extrusion |
| 02/10/1976 | US3937385 Method of manufacturing compound billets for hydrostatic extrusion |
| 01/27/1976 | US3934446 Methods of and apparatus for production of wire |
| 01/27/1976 | US3934442 Press for hydrostatic extrusion |