US2961174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of winding coils on spools
Assignee: AT&T Inc
•
Filing: 1957-04-22
•
Granted: 1960-11-22
•
Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Robert O Birchler
- 👤 Oliver M Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:37
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/10; B65H54/20; B21; B21C; B21C47/00; B21C47/006; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/064; H01F41/069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US862935A
Cited
US1814389A
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US2214384A
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US2200000A
Cited
US2432270A
Cited
US2537457A
Cited
US2666168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |