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Patents Grants
last 30 patents
Information
Patent Grant
Method for grinding plane-parallel circular annular faces on disk-s...
Patent number
4,827,677
Issue date
May 9, 1989
Supfina Maschinenfabrik Hentzen KG
Heinz G. Schmitz
B24 - GRINDING POLISHING
Information
Patent Grant
Apparatus for fine machining of plane surfaces of disk-shaped workp...
Patent number
4,811,523
Issue date
Mar 14, 1989
Supfina Maschinenfabrik Hentzen KG
Heinz-Gunter Schmitz
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Machining device and method
Patent number
4,222,203
Issue date
Sep 16, 1980
Supfina Maschinenfabrik Hentzen KG
Friedrich Wolff
B24 - GRINDING POLISHING
Information
Patent Grant
Method for micro-finish machining of compound, circular arc-shaped...
Patent number
4,048,764
Issue date
Sep 20, 1977
Supfina Maschinenfabrik Hentzen KG
H. Gunter Schmitz
B24 - GRINDING POLISHING
Information
Patent Grant
Apparatus for the micro-finish of cylindrical or conical surfaces
Patent number
4,024,672
Issue date
May 24, 1977
Supfina Maschinenfabrik Hentzen KG
Karl Wieck
B24 - GRINDING POLISHING
Information
Patent Grant
Apparatus for continuous cleaning of a honing tool
Patent number
4,004,375
Issue date
Jan 25, 1977
Supfina Maschinenfabrik Hentzen KG
Karl Wieck
B24 - GRINDING POLISHING
Information
Patent Grant
Apparatus for micro-finish machining of compound, circular arc-shap...
Patent number
3,959,928
Issue date
Jun 1, 1976
Supfina Maschinenfabrik Hentzen KG
H. Gunter Schmitz
B24 - GRINDING POLISHING
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last 30 patents
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