US2595308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-to-gas heat exchanger
Assignee: Modine Manufacturing Co
•
Filing: 1948-03-03
•
Granted: 1952-05-06
•
Expires: 1968-03-03
Abstract
No abstract record available.
Inventors
- 👤 Clyde S Simpelaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:17
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US837146A
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US1409967A
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US1852841A
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US1879519A
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US1992097A
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US2031425A
Cited
US2133502A
Cited
GB534313A
Cited
FR875306A
Cited
US2428880A
Cited
GB574949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |