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US2663067A
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Apparatus for winding
Assignee: Celanese Corp
•
Filing: 1949-05-19
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Granted: 1953-12-22
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Expires: 1969-05-19
Abstract
No abstract record available.
Inventors
- 👤 Robert H Roughsedge
- 👤 Meder Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:04
CPC Classifications
D; D02; D02H; D02H3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2196000A
Cited
US2382760A
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US2398232A
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US2572904A
Cited
US2450431A
Cited
US2485382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |