Patent US2827534A successfully refreshed from Google Patents.
US2827534A
Expired / Lapsed
US
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Wall thermostat
Assignee: General Controls Co
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Filing: 1955-05-12
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Granted: 1958-03-18
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Expires: 1975-05-12
Abstract
No abstract record available.
Inventors
- 👤 John H Grayson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:41
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2288517A
Cited
US2273375A
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US2308911A
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US2289882A
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US2399406A
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US2493190A
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US2739204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |