Patent US2833894A successfully refreshed from Google Patents.
US2833894A
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Temperature responsive control
Assignee: Robertshaw Controls Co
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Filing: 1956-12-12
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Granted: 1958-05-06
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Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 Weber Victor
- 👤 Hugh J Tyler
- 👤 William J Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:38
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/36; H01H61/00; H01H61/06; H01H61/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2385434A
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US2403824A
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US2441192A
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US2591803A
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US2671136A
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US2715664A
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US2718574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |