US2789774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile winding
Assignee: Celanese Corp
•
Filing: 1953-11-10
•
Granted: 1957-04-23
•
Expires: 1973-11-10
Abstract
No abstract record available.
Inventors
- 👤 Svend A Petersen
- 👤 Chow Ho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:14
CPC Classifications
B; B65; B65H; B65H67/00; B65H67/04; B65H67/044; B65H67/048; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE417941C
Cited
GB334925A
Cited
DE664242C
Cited
US2385692A
Cited
US2586832A
Cited
US2361265A
Cited
DE874945C
Cited
US2585227A
Cited
US2507144A
Cited
US2663507A
Cited
US2622810A
Cited
US2706090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |