Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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B23F
MAKING GEARS OR TOOTHED RACKS
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5/00
Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
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B23F5/22
the tool being a hob for making spur gears
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