for simultaneously sharpening several drills; Supports therefor

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Patents Grantslast 30 patents

Information Patent Grant
Drill bit pointing and dirt removal apparatus and method
- Patent number 6,769,965
- Issue date Aug 3, 2004
- Ichiro Katayama
- B24 - GRINDING POLISHING
Information Patent Grant
3608247
- Patent number 3,608,247
- Issue date Sep 28, 1971
- B24 - GRINDING POLISHING
Information Patent Grant
3488886
- Patent number 3,488,886
- Issue date Jan 13, 1970
- B24 - GRINDING POLISHING
Information Patent Grant
3355841
- Patent number 3,355,841
- Issue date Dec 5, 1967
- B24 - GRINDING POLISHING
Information Patent Grant
3239966
- Patent number 3,239,966
- Issue date Mar 15, 1966
- B24 - GRINDING POLISHING
Information Patent Grant
3135074
- Patent number 3,135,074
- Issue date Jun 2, 1964
- B24 - GRINDING POLISHING
Information Patent Grant
3100956
- Patent number 3,100,956
- Issue date Aug 20, 1963
- B24 - GRINDING POLISHING
Information Patent Grant
3089290
- Patent number 3,089,290
- Issue date May 14, 1963
- B24 - GRINDING POLISHING
Information Patent Grant
2897635
- Patent number 2,897,635
- Issue date Aug 4, 1959
- B24 - GRINDING POLISHING
Information Patent Grant
2796703
- Patent number 2,796,703
- Issue date Jun 25, 1957
- B24 - GRINDING POLISHING
Information Patent Grant
2601748
- Patent number 2,601,748
- Issue date Jul 1, 1952
- B24 - GRINDING POLISHING
Information Patent Grant
2591893
- Patent number 2,591,893
- Issue date Apr 8, 1952
- B24 - GRINDING POLISHING