US2853847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for intertwining fibers to form roving or yarn
Assignee: KEELER
•
Filing: 1957-05-08
•
Granted: 1958-09-30
•
Expires: 1977-05-08
Abstract
No abstract record available.
Inventors
- 👤 Lawrence M Keeler
- 👤 James G Gamble
- 👤 Albert J Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:05
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US778604A
Cited
DE326452C
Cited
US1743601A
Cited
US2173789A
Cited
US2451504A
Cited
US2557433A
Cited
US2515299A
Cited
FR1073703A
Cited
US2700866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |