Patent US2670144A successfully refreshed from Google Patents.
US2670144A
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Coil winding apparatus and power mechanism therefor
Assignee: Rockwell Manufacturing Co
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Filing: 1947-06-11
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Granted: 1954-02-23
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Expires: 1967-06-11
Abstract
No abstract record available.
Inventors
- 👤 Johnson Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:49
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/28; B65H54/2848; B65H54/2854; B65H54/2857; B65H54/2866; B65H54/10; B65H54/20; B65H54/283; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2552; Y10T82/2554; Y10T82/2556
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) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |