USPC Class Details – HistoricIP

Description: 16 miscellaneous hardware (e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.) / 16 miscellaneous hardware (e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.)/(49) checks and closers (66) pneumatic

Hierarchy/Derived subclasses

16 / 49	-> 66	-> 67
		-> 68
		-> 69
		-> 70

uspto searches

Patent Apps in 16/66

Granted Patents in 16/66

Use the links above or do an advanced search in ppubs for:
(16/66.ccls. or 16/67.ccls. or 16/68.ccls. or 16/69.ccls. or 16/70.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.