US2125889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic control for heating and cooling systems
Assignee: Powers Regulator Co
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Filing: 1936-11-09
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Granted: 1938-08-09
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Expires: 1956-11-09
Abstract
No abstract record available.
Inventors
- 👤 Alvin L Crump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/80; F24F11/83; F24F11/84; F24F3/00; F24F3/06; F24F5/00; F24F5/0003; F24F11/30; F24F2110/00; F24F2110/10; F24F2221/00; F24F2221/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-08-08 | 1942-02-07 | 1942-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-08-08 | 1946-02-07 | 1946-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-08-08 | 1950-02-07 | 1950-08-09 | $7700.00 | Window Closed / Lapsed |