H
ELECTRICITY
H01
ELECTRIC ELEMENTS
H01R
ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
31/00
Coupling parts supported only by co-operation with counterpart
H01R31/06
Intermediate parts for linking two coupling parts, e.g. adapter
H01R31/065
with built-in electric apparatus