Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B24
GRINDING; POLISHING
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B24D
TOOLS FOR GRINDING, BUFFING OR SHARPENING
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15/00
Hand tools or other devices for non-rotary grinding, polishing, or stropping
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B24D15/06
specially designed for sharpening cutting edges
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B24D15/085
with reciprocating whetstones
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