Patent FR2452833A1 successfully refreshed from Google Patents.
US2469141A
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US
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Polysulfide polymer and process of making
Assignee: ATK Launch Systems LLC
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Filing: 1946-11-13
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Granted: 1949-05-03
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Expires: 1966-11-13
Abstract
No abstract record available.
Inventors
- 👤 Robert O Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:08
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/14; Y; Y10; Y10S; Y10S524/00; Y10S524/923; Y10S524/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2347233A
Cited
US2277941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |