Patent US2781485A successfully refreshed from Google Patents.
US2781485A
Expired / Lapsed
US
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Thermally controlled electric switches
Assignee: Stubnitz Greene Spring Corp
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Filing: 1952-07-17
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Granted: 1957-02-12
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Expires: 1972-07-17
Abstract
No abstract record available.
Inventors
- 👤 Charles W Slocum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:03
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2169989A
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US2304018A
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US2358372A
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US2379602A
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US2618721A
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US2568323A
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US2521277A
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US2573404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |