Patent US2533506A successfully refreshed from Google Patents.
US2533506A
Expired / Lapsed
US
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Universal coil-winding machine
Assignee: AT&T Inc
•
Filing: 1947-05-01
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Granted: 1950-12-12
•
Expires: 1967-05-01
Abstract
No abstract record available.
Inventors
- 👤 Charles D Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:52
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/10; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/071
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |