IPC Subgroup
F17B 1/22 spirally-guided
Introduced: September 1968
Last revised: January 2006
Full Title
Gas-holders of variable capacity > of wet type > telescopic > spirally-guided
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- STORING OR DISTRIBUTING GASES OR LIQUIDS
- Subclass:
- GAS-HOLDERS OF VARIABLE CAPACITY