Patent US3047906A successfully refreshed from Google Patents.
US3047906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet spinning apparatus and start up process
Assignee: Celanese Corp
•
Filing: 1959-12-11
•
Granted: 1962-08-07
•
Expires: 1979-12-11
Abstract
No abstract record available.
Inventors
- 👤 John W Soehngen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:40
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06; D01F; D01F2/00; D01F2/24; D01F2/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1818549A
Cited
US2004273A
Cited
US2391973A
Cited
US2657973A
Cited
US2758909A
Cited
GB788315A
Cited
US2872702A
Cited
US2919465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |