IPC Subgroup
E05B 35/1 with master and pass keys
Introduced: September 1968
Last revised: January 2006
Full Title
Locks for use with special keys or a plurality of keys > operable by a plurality of keys > with master and pass keys
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- Subclass:
- LOCKS; ACCESSORIES THEREFOR; HANDCUFFS