Tier drop grid system
US4794745A · kind A · utility
45Cited by
25References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1986 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Dec 15, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2009/062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A suspended ceiling grid member which comprises a web portion, an upper bulb extending along the top of the web portion, a pair of flanges extending outwardly from the bottom of the web portion, the flanges being adapted to support ceiling tiles, and a lower bulb extending downwardly from the flanges, whereby the lower bulb provides greater strength to the suspended ceiling grid member and also enhances the appearance thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.