US3287874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel grid members with t-rail and hanger bracket
Assignee: K S H PLASTICS Inc
•
Filing: 1963-08-05
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Granted: 1966-11-29
•
Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Leo G Stahlhut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:22
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/12; E04B9/122; E04B9/125
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A GRID ASSEMBLY FOR A SUSPENDED CEILING COMPRISING A GRID MEMBER HAVING A PAIR OF TRANSVERSELY SPACED VERTICAL WALLS CONNECTED AT THEIR LOWER EDGES BY AND INTEGRAL WITH A WEB, A T-RAIL ON AND THE STEM OF WHICH IS INTEGRAL WITH THE UPPER SURFACE OF THE WEB, SAID T-RAIL BEING BETWEEN AND BELOW THE TOP OF THE VERTICAL WALLS, AND A HANGER BRACKET, MOUNTED ON SAID T-RAIL, SAID HANGER BRACKET COMPRISING A PLATE, EARS ON SAID PLATE PROJECTING TOWARD THE TWO WALLS OF SAID MEMBER AND CLOSELY ADJACENT, BUT SLIDABLE WITH RESPECT THERETO, AND INTURNED FEET, ALONG THE LOWER EDGE OF SAID PLATE, SAID FEET SLIDABLY ENGAGING THE UNDERSIDE OF THE HEAD OF THE T-RAIL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |