USPC Class Details – HistoricIP

Description: 213 railway draft appliances / 213 railway draft appliances/(75r) couplings (77) counterpart (100r) interengaging hooks and knuckles (104) horizontally swinging (109) janney type (139) gravity locks (145) vertically sliding

Hierarchy/Derived subclasses

213 / 75r	-> 77	-> 100r	-> 104	-> 109	-> 139	-> 145	-> 146
							-> 147
							-> 148

uspto searches

Patent Apps in 213/145

Granted Patents in 213/145

Use the links above or do an advanced search in ppubs for:
(213/145.ccls. or 213/146.ccls. or 213/147.ccls. or 213/148.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.