IPC Subgroup
A01K 31/02 Door appliances; Automatic door-openers
Introduced: September 1968
Last revised: January 2006
Full Title
Housing birds > Door appliances; Automatic door-openers
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- Subclass:
- ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS