Patent US2815905A successfully refreshed from Google Patents.
US2815905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for winding coils on spools
Assignee: AT&T Inc
•
Filing: 1951-04-09
•
Granted: 1957-12-10
•
Expires: 1971-04-09
Abstract
No abstract record available.
Inventors
- 👤 Robert O Birchler
- 👤 Oliver M Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:21
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/10; B65H54/20; B65H54/22; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/064; H01F41/066; H01F41/068
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US594989A
Cited
US766936A
Cited
US1093146A
Cited
US1868408A
Cited
US1814389A
Cited
US2153996A
Cited
US2424021A
Cited
US2432270A
Cited
US2563642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |