US2296609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building construction
Assignee: United States Gypsum Co
•
Filing: 1939-03-27
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Granted: 1942-09-22
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Expires: 1959-03-27
Abstract
No abstract record available.
Inventors
- 👤 Oliver E Gibson
- 👤 William M Mcneil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:46
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; E04B2/842; E04B2/56; E04B2/58; E04B2/74; E04B2/7407; E04B2/7453; E04B2/7457; E04B2/72; E04B2/723; E04B2/7409; E04B2/7411; E04B2002/726; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/3439; Y10T24/344; Y10T24/3444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-09-21 | 1946-03-23 | 1946-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-09-21 | 1950-03-23 | 1950-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-09-21 | 1954-03-23 | 1954-09-22 | $7700.00 | Window Closed / Lapsed |