Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
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B25D
PERCUSSIVE TOOLS
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9/00
Portable percussive tools with fluid-pressure drive,; i.e. driven directly by fluids; , e.g. having several percussive tool bits operated simultaneously
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B25D9/04
of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
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