Gerrit Jan Groothuis

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Drachten, NL

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Patents Grantslast 30 patents

Information Patent Grant
Shaving apparatus
- Patent number 4,510,687
- Issue date Apr 16, 1985
- U.S. Philips Corporation
- Gerrit J. Groothuis
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Shaving apparatus
- Patent number 4,424,628
- Issue date Jan 10, 1984
- U.S. Philips Corporation
- Gerrit J. Groothuis
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Shaving apparatus
- Patent number 4,275,497
- Issue date Jun 30, 1981
- U.S. Philips Corporation
- Manfred Engelhardt
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Shaving apparatus
- Patent number 4,259,781
- Issue date Apr 7, 1981
- U.S. Philips Corporation
- Ebbe Boiten
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Dry shaving apparatus
- Patent number 4,170,822
- Issue date Oct 16, 1979
- U.S. Philips Corporation
- Gerrit J. Groothuis
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Dry-shaving apparatus with reciprocatable cutting block
- Patent number 4,003,131
- Issue date Jan 18, 1977
- U.S. Philips Corporation
- Gerrit Jan Groothuis
- B26 - HAND CUTTING TOOLS CUTTING SEVERING