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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2217/00
Details of, or accessories for, portable power-driven percussive tools
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B25D2217/0073
Arrangements for damping of the reaction force
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B25D2217/0076
by use of counterweights
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B25D2217/0092
being spring-mounted
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