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US2078199A
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US
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Heatproofed set-stabilized gypsum plaster
Assignee: United States Gypsum Co
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Filing: 1936-10-02
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Granted: 1937-04-20
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Expires: 1956-10-02
Abstract
No abstract record available.
Inventors
- 👤 George D King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:04
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1018; C04B28/00; C04B28/14; C04B2103/00; C04B2103/10; C04B2103/20; C04B2103/22
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) | 1940-04-19 | 1940-10-19 | 1941-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-19 | 1944-10-19 | 1945-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-19 | 1948-10-19 | 1949-04-20 | $7700.00 | Window Closed / Lapsed |