US2069971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture or treatment of yarns or filaments
Assignee: Celanese Corp
•
Filing: 1934-12-26
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Granted: 1937-02-09
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Expires: 1954-12-26
Abstract
No abstract record available.
Inventors
- 👤 Schneider George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:30
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/15; D01; D01F; D01F2/00; D01F2/24; D01F2/28; C; C10; C10M; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/08; C10M2207/28; C10M2207/287; C10M2207/289; C10M2207/40; C10M2207/404; C10N; C10N2040/00; C10N2040/46
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) | 1940-02-09 | 1940-08-10 | 1941-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-09 | 1944-08-10 | 1945-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-09 | 1948-08-10 | 1949-02-09 | $7700.00 | Window Closed / Lapsed |