Patent US1996032A successfully refreshed from Google Patents.
US1996032A
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Sound absorbing composition
Assignee: United States Gypsum Co
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Filing: 1929-04-15
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Granted: 1935-03-26
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Expires: 1949-04-15
Abstract
No abstract record available.
Inventors
- 👤 Carlisle K Roos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:35
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/28; G; G05; G05B; G05B11/00; G05B11/44; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/52; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S264/00; Y10S264/63; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/31; Y10T442/00; Y10T442/20; Y10T442/25
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) | 1938-03-25 | 1938-09-24 | 1939-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-03-25 | 1942-09-24 | 1943-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-03-25 | 1946-09-24 | 1947-03-26 | $7700.00 | Window Closed / Lapsed |