US2698524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer between two media according to the carnot principle
Assignee: Individual
•
Filing: 1950-04-08
•
Granted: 1955-01-04
•
Expires: 1970-04-08
Abstract
No abstract record available.
Inventors
- 👤 Rygard Sune Ossian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:55
CPC Classifications
F; F25; F25B; F25B29/00; F24; F24F; F24F3/00; F24F3/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119011A
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US2008407A
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US2071178A
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US2091563A
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US2212356A
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US2241060A
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US2376859A
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US2463881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |