US2670154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile apparatus
Assignee: Celanese Corp
•
Filing: 1948-09-09
•
Granted: 1954-02-23
•
Expires: 1968-09-09
Abstract
No abstract record available.
Inventors
- 👤 Frederick F Sutherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:31
CPC Classifications
B; B65; B65H; B65H51/00; B65H51/16; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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US2349873A
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US2377799A
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US2447982A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |