Patent US2940884A successfully refreshed from Google Patents.
US2940884A
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Assignee: EIDP Inc
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Filing: 1956-03-30
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Granted: 1960-06-14
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Expires: 1976-03-30
Abstract
No abstract record available.
Inventors
- 👤 White Deane Rowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:47
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/04; G03D15/043; C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/30; Y; Y10; Y10S; Y10S206/00; Y10S206/82; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T156/1095; Y10T428/00; Y10T428/14; Y10T428/1452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US986655A
Cited
US2133609A
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US2329527A
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US2506933A
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US2649199A
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US2651588A
Cited
US2679968A
Cited
US2725322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |