US1989641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gypsum plaster
Assignee: United States Gypsum Co
•
Filing: 1932-05-09
•
Granted: 1935-01-29
•
Expires: 1952-05-09
Abstract
No abstract record available.
Inventors
- 👤 George D King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:28
CPC Classifications
C; C04; C04B; C04B22/00; C04B22/08; C04B22/14; C04B22/142; C04B28/00; C04B28/14; C04B2103/00; C04B2103/20
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) | 1938-01-28 | 1938-07-30 | 1939-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-01-28 | 1942-07-30 | 1943-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-01-28 | 1946-07-30 | 1947-01-29 | $7700.00 | Window Closed / Lapsed |