Thomas Ketteringham

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Mevagissey, GB

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Patents Grantslast 30 patents

Information Patent Grant
Multiple purpose tool grinding device
- Patent number 5,311,703
- Issue date May 17, 1994
- Martek Limited
- Thomas Ketteringham
- B24 - GRINDING POLISHING
Information Patent Grant
Apparatus for sharpening edge tools
- Patent number 4,961,288
- Issue date Oct 9, 1990
- Martek Limited
- Thomas Ketteringham
- B24 - GRINDING POLISHING