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US2649645A
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Assignee: EIDP Inc
•
Filing: 1949-05-21
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Granted: 1953-08-25
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Expires: 1969-05-21
Abstract
No abstract record available.
Inventors
- 👤 Cole Paul Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:26
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0454
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR558472A
Cited
US2277753A
Cited
US2266574A
Cited
US2398808A
Cited
US2424489A
Cited
US2578330A
Cited
GB626508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |