IPC Subgroup
E01B 7/04 Constructions with tongues turning about a vertical pivot at the end
Introduced: September 1968
Last revised: January 2006
Full Title
Switches; Crossings > Tongues; Associated constructions > Constructions with tongues turning about a vertical pivot at the end
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- Subclass:
- PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS