DIFF Subgroup
E01B 7/26 Lubricating of switches (lubricating of rails B61K3/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Lubricating of switches
CPC: Lubricating of switches (lubricating of rails B61K3/00)
Full Title
Full titles differ between systems:
IPC:
Switches; Crossings > Lubricating of switches
CPC:
Switches; Crossings (operating mechanisms B61L) > Lubricating of switches (lubricating of rails B61K3/00)
No child classifications to compare. This is a leaf node in both IPC and CPC.