DIFF Subgroup
E04C 3/42 of wood, e.g. units for rafter roofs (E04C3/46 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: of wood, e.g. units for rafter roofs
CPC: of wood, e.g. units for rafter roofs (E04C3/46 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Structural elongated elements designed for load-supporting > Arched girders or portal frames > of wood, e.g. units for rafter roofs
CPC:
Structural elongated elements designed for load-supporting (as building aids E04G) > Arched girders or portal frames (straight girders able to be bent E04C3/02; inflatable E04H15/20) > of wood, e.g. units for rafter roofs (E04C3/46 takes precedence)
No child classifications to compare. This is a leaf node in both IPC and CPC.