Patent US2552237A successfully refreshed from Google Patents.
US2552237A
Expired / Lapsed
US
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Device for heating fluids by means of solar energy
Assignee: Centre National de la Recherche Scientifique
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Filing: 1950-03-25
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Granted: 1951-05-08
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Expires: 1970-03-25
Abstract
No abstract record available.
Inventors
- 👤 Trombe Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:04
CPC Classifications
F; F24; F24S; F24S20/00; F24S20/20; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB146820A
Cited
US290851A
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GB191318998A
Cited
FR555420A
Cited
US1661473A
Cited
US1599481A
Cited
US1696003A
Cited
FR589025A
Cited
US1747826A
Cited
US2291534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |