Patent US2797879A successfully refreshed from Google Patents.
US2797879A
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US
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Condenser winding machine
Assignee: AT&T Inc
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Filing: 1953-07-08
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Granted: 1957-07-02
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Expires: 1973-07-08
Abstract
No abstract record available.
Inventors
- 👤 Jerome R Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:07
CPC Classifications
B; B21; B21F; B21F3/00; H; H01; H01G; H01G13/00; H01G13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB369356A
Cited
US2095123A
Cited
US2166852A
Cited
US2333570A
Cited
US2261417A
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US2650038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |