US2657018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Modine Manufacturing Co
•
Filing: 1948-12-06
•
Granted: 1953-10-27
•
Expires: 1968-12-06
Abstract
No abstract record available.
Inventors
- 👤 Clyde S Simpelaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:32
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/04; B; B60; B60H; B60H1/00; B60H1/00321; B60H1/00328; F28D1/00; F28D1/02; F28D1/03; F28D1/0358; Y; Y10; Y10S; Y10S165/00; Y10S165/092; Y10S165/109; Y10S165/11; Y10S165/111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1950344A
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US731469A
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US1823788A
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US1895444A
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US2236976A
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US1922534A
Cited
GB425812A
Cited
US2129300A
Cited
US2131265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |