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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2250/00
General details of portable percussive tools; Components used in portable percussive tools
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B25D2250/275
Tools having at least two similar components
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B25D2250/285
Tools having three or more similar components, e.g. three motors
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B25D2250/291
Tools having three or more parallel bits, e.g. needle guns
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