US2961162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible automatic thermostat
Assignee: Powers Regulator Co
•
Filing: 1956-10-11
•
Granted: 1960-11-22
•
Expires: 1976-10-11
Abstract
No abstract record available.
Inventors
- 👤 David H Thorburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:18
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/185; G05D23/1856; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686; Y10T137/87169; Y10T137/87233
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1500260A
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US2021263A
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US2310293A
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US2601377A
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US2724555A
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US2774377A
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US2805025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |