USPC Class Details – HistoricIP

Description: 194 check-actuated control mechanisms / 194 check-actuated control mechanisms/(215) including value accumulator for plural checks (219) and electric circuit with switch operated by check (220) accumulator includes electric circuit having stepper switch (221) single check-operated switch

Hierarchy/Derived subclasses

194 / 215

-> 219

-> 220

-> 221

uspto searches

Patent Apps in 194/221

Granted Patents in 194/221

Use the links above or do an advanced search in ppubs for:
(194/221.ccls.)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.