Access-control system for door lock
US10294697B2 · kind B2 · utility
4Cited by
14References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2016 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | May 15, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B53/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An access-control system is provided for a door lock that is associated with a door and a rotatable doorknob. The access-control system includes a doorknob cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.