Screw driver sharpener
United States Patent 2653421
US Patent References:
/0196333.html
- - 0196333

/0677276.html
- - 0677276

/0983975.html
- - 0983975

/1180727.html
- - 1180727

Machine for forming razor-blades
- - 1370381


Inventors:
Frank, Kobos
Publication Date:
09/29/1953
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Assignee:
Frank, Kobos
Primary Class:
451/194
Other Classes:
451/294
International Classes:
B24B3/36; B24B3/00
US Patent References:
1756949Portable grinding tool
1814367Long bar grinder
2228385Apparatus for finishing and reconditioning edged tools
2249084Screw driver sharpener and shaper
2407835Attachment for grinding machines
2592000Watchmaker's screwdriver sharpener
Foreign References:
GB189904967A
FR729818A