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Konrad Friedrichs KG
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Kulmbach, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Continuous extrusion process and device for rods made of a plastic...
Patent number
6,248,277
Issue date
Jun 19, 2001
Konrad Friedrichs KG
Konrad Friedrichs
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Extruder for extrusion manufacturing
Patent number
5,904,939
Issue date
May 18, 1999
Konrad Friedrichs KG
Arno Friedrichs
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Apparatus for producing a hard metal or ceramic rod having helical...
Patent number
5,780,063
Issue date
Jul 14, 1998
Konrad Friedrichs KG
Arno Friedrichs
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Extruder for extrusion manufacturing
Patent number
5,601,857
Issue date
Feb 11, 1997
Konrad Friedrichs KG
Arno Friedrichs
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Extrusion tool for producing a hard metal rod or a ceramic rod with...
Patent number
5,438,858
Issue date
Aug 8, 1995
Gottlieb Guhring KG
Arno Friedrichs
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...