US2565562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn support
Assignee: Celanese Corp
•
Filing: 1946-05-31
•
Granted: 1951-08-28
•
Expires: 1966-05-31
Abstract
No abstract record available.
Inventors
- 👤 Albert W Keight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:26
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/02; D01H7/04; D01H7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US127748A
Cited
US346135A
Cited
GB283325A
Cited
FR645414A
Cited
GB335407A
Cited
US1898115A
Cited
CH152212A
Cited
GB396721A
Cited
US2414054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |