Patent US341587A successfully refreshed from Google Patents.
US2920437A
Expired / Lapsed
US
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Machines for twisting together electric conductors
Assignee: SOUTHERN UNITED TELEPHONE CABLES Ltd
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Filing: 1957-11-04
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Granted: 1960-01-12
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Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Stark William Harry Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:20
CPC Classifications
D; D07; D07B; D07B3/00; D07B3/02; D07B3/04; D07B3/045; H; H01; H01B; H01B13/00; H01B13/02; H01B13/0214
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |