US2476737A
Expired / Lapsed
US
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Polymers and copolymers of 2-vinylfluorene and their preparation
Assignee: General Electric Co
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Filing: 1945-08-28
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Granted: 1949-07-19
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Expires: 1965-08-28
Abstract
No abstract record available.
Inventors
- 👤 Edward A Kern
- 👤 Jr Royal K Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:24
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/32; C07; C07C; C07C1/00; C07C1/20; C07C1/24; C07C13/00; C07C13/28; C07C13/32; C07C13/54; C07C13/547; C07C13/567; C07C49/00; C07C49/76; C07C49/782; C07C49/792; C07C2521/00; C07C2521/02; C07C2521/04; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F212/34; C08F212/36; C08F218/00; C08F218/14; C08F218/16; C08F218/18; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F222/00; C08F222/04; C08F222/06; C08F222/10; C08F222/1006; C08F222/102; C08F236/00; C08F236/02; C08F236/04; C08F236/06
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) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |