US2884501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit protective device
Assignee: Tung Sol Electric Inc
•
Filing: 1956-05-31
•
Granted: 1959-04-28
•
Expires: 1976-05-31
Abstract
No abstract record available.
Inventors
- 👤 Daniel K Dorian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:14
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/64; H01H37/66; H01H1/00; H01H1/50; H01H1/504; H01H1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US865638A
Cited
US1701757A
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US1898174A
Cited
US1772442A
Cited
US1830578A
Cited
US1875625A
Cited
US2179936A
Cited
US2040405A
Cited
US2403803A
Cited
US2611056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |