US2465151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace with thermostatic control of convection mediums
Assignee: ROCKY MOUNTAIN GAS EQUIPMENT C
•
Filing: 1945-09-27
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Granted: 1949-03-22
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Expires: 1965-09-27
Abstract
No abstract record available.
Inventors
- 👤 James P Dresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:05
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/08; F24H3/087; F24H9/00; F24H9/20; F24H9/2064; F24H9/2085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US387681A
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US752002A
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USRE17817E
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GB190627380A
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US990755A
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US1689067A
Cited
US1732061A
Cited
US1834958A
Cited
US1943223A
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US2079157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-21 | 1952-09-20 | 1953-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-21 | 1956-09-20 | 1957-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-21 | 1960-09-20 | 1961-03-22 | $7700.00 | Window Closed / Lapsed |