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US2521723A
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US
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Magnetically controlled switch
Assignee: Individual
•
Filing: 1945-02-03
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Granted: 1950-09-12
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Expires: 1965-02-03
Abstract
No abstract record available.
Inventors
- 👤 Hubbell Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:34
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1287896A
Cited
US1529470A
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US1874199A
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US2004114A
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US2178839A
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US2234982A
Cited
US2384948A
Cited
US2323910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |