DIFF Subgroup
E01B 7/12 Fixed frogs made of one part or composite
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Switches; Crossings > Frogs > Fixed frogs made of one part or composite
CPC:
Switches; Crossings (operating mechanisms B61L) > Frogs > Fixed frogs made of one part or composite
No child classifications to compare. This is a leaf node in both IPC and CPC.