DIFF Subgroup
E01B 3/02 made from wood (drying or impregnating B27K)
Introduced: September 1968
Title
Titles differ between systems:
IPC: made from wood
CPC: made from wood (drying or impregnating B27K)
Full Title
Full titles differ between systems:
IPC:
Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails > made from wood
CPC:
Transverse or longitudinal sleepers (for switches or crossings E01B7/22); Other means resting directly on the ballastway for supporting rails > made from wood (drying or impregnating B27K)
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
Child Classifications
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- E01B 3/12 Longitudinal sleepers; Longitudinal sleepers integral or combined with tie-rods; Combined longitudinal and transverse sleepers IPC+CPC Available in IPC and CPC