Lock head protector
US4122695A · kind A · utility
9Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Sep 21, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7921
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hardened protective housing is rotatably secured to the outer head of a cylindrical lock for precluding access to and mistreatment of said head for rendering the lock ineffective for its intended purpose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.