Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B24
GRINDING; POLISHING
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B24B
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
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19/00
Single-purpose machines or devices for particular grinding operations not covered by any other main group
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B24B19/16
for grinding sharp-pointed workpieces, e.g. needles, pens, fish hooks, tweezers or record player styli
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