DIFF Subgroup
H01R 33/72 Three-pole devices
Introduced: September 1968
Full Title
Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof > Three-pole devices
No child classifications to compare. This is a leaf node in both IPC and CPC.