Patent US2630976A successfully refreshed from Google Patents.
US2630976A
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Yarn winding apparatus
Assignee: Celanese Corp
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Filing: 1950-03-04
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Granted: 1953-03-10
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Expires: 1970-03-04
Abstract
No abstract record available.
Inventors
- 👤 Albert W Keight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:48
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/28; B65H54/34; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1966159A
Cited
US2035721A
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US2086655A
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US2244492A
Cited
US2395890A
Cited
US2481031A
Cited
US2517625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |