DIFF Subgroup
B25D 9/26 Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Portable percussive tools with fluid-pressure drive, e.g. having several percussive tool bits operated simultaneously > Control devices for the reciprocating piston > Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
CPC:
Portable percussive tools with fluid-pressure drive, , e.g. having several percussive tool bits operated simultaneously > Control devices for the reciprocating piston > Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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