US2781177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn winding
Assignee: Celanese Corp
•
Filing: 1953-02-05
•
Granted: 1957-02-12
•
Expires: 1973-02-05
Abstract
No abstract record available.
Inventors
- 👤 Svend A Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:10
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/52; 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)
US1176014A
Cited
FR399700A
Cited
FR484489A
Cited
US1913349A
Cited
US1825233A
Cited
US2060804A
Cited
US2070413A
Cited
GB473121A
Cited
US2193738A
Cited
GB530811A
Cited
US2286516A
Cited
US2466109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |