Ventilated door light
US4989381A · kind A · utility
27Cited by
22References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1986 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Apr 10, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2003/4492
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The specification discloses a relatively simple and inexpensive ventilated door light or window. The door light includes a one-piece outer frame which supports a fixed glass panel, a screen, and a sliding sash. the door light further includes an inner frame secured to the outer frame to mount the light in a door. Preferably, the inner frame includes two identical L-shaped pieces interlocked to define its rectangular shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.