Patent US2471924A successfully refreshed from Google Patents.
US2471924A
Expired / Lapsed
US
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Thermal relay
Assignee: Metals and Controls Corp
•
Filing: 1943-07-10
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Granted: 1949-05-31
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Expires: 1963-07-10
Abstract
No abstract record available.
Inventors
- 👤 John D Bolesky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:19
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1754561A
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US1886439A
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US2002467A
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US1974188A
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US2203558A
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US2199387A
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US2199388A
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US2309207A
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US2207422A
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US2292976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |