Door frame structure with safety lock bracket
US3956855A · kind A · utility
15Cited by
7References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1974 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Jun 26, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/4602
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A safety lock bracket is provided for affixing the end of a door frame header having internal roller tracks to the end of a door jamb over which it is mounted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.