US2744980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit control apparatus
Assignee: Cook Electric Co
•
Filing: 1953-01-05
•
Granted: 1956-05-08
•
Expires: 1973-01-05
Abstract
No abstract record available.
Inventors
- 👤 John C Bellamy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:44
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/72; H01H51/00; H01H51/02; H01H51/04; H01H51/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1900719A
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US2163709A
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US2635637A
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US2669631A
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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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |