US2996765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspended ceiling and clip therefor
Assignee: United States Gypsum Co
•
Filing: 1957-02-12
•
Granted: 1961-08-22
•
Expires: 1977-02-12
Abstract
No abstract record available.
Inventors
- 👤 Nelsson Nels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:04
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/12; E04B9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1595718A
Cited
US1929302A
Cited
US1984028A
Cited
US2667667A
Cited
US2648102A
Cited
US2868604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |