US2585477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic control for hotwater heaters and the like
Assignee: Stewart Warner Corp
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Filing: 1945-12-22
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Granted: 1952-02-12
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Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 John H Leslie
- 👤 Jr William A Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:34
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2035; F24H1/00; F24H1/22; F24H1/24; F24H1/26; F24H1/28; F24H1/282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |