US2939270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spindle tapes
Assignee: Celanese Corp
•
Filing: 1956-04-03
•
Granted: 1960-06-07
•
Expires: 1976-04-03
Abstract
No abstract record available.
Inventors
- 👤 William T Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:35
CPC Classifications
F; F16; F16G; F16G1/00; F16G1/14; F16G1/16; D; D01; D01H; D01H1/00; D01H1/14; D01H1/20; D01H1/24; D01H1/241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
IN A WINDING APPARATUS COMPRISING A SPINDLE, A DRIVE WHEEL AND A SPINDLE TAPE OPERATIVELY CONNECTING SAID
Claim 2
Dependent Claim
17 words
IN A WINDING APPARATUS COMPRISING A SPINDLE, A DRIVE WHEEL AND A SPINDLE TAPE OPERATIVELY CONNECTING SAID
References Cited (Backward Citations)
US380784A
Cited
GB581473A
Cited
US2628198A
Cited
US2701242A
Cited
US2758439A
Cited
US2715590A
Cited
US2763578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |