Magnetically actuated cat door
US4022263A · kind A · utility
52Cited by
7References
5Claims
0Family size
Inventors
Key dates
| Filing date | Sep 2, 1976 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Sep 2, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B7/32
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A magnetically actuated cat door is provided wherein the owner's cat can wear a magnet and go freely in and out of the door while other cats are effectively barred from entering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.