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Patent US2930940A successfully refreshed from Google Patents.
US2930940A
Expired / Lapsed
US
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Interlocking mechanism for enclosed circuit control
Assignee: General Electric Co
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Filing: 1957-02-06
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Granted: 1960-03-29
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Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Henry A Trumpler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:02
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2363364A
Cited
US2381243A
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US2443664A
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US2542853A
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US2531157A
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US2646474A
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US2791729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |