US2985433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Modine Manufacturing Co
•
Filing: 1957-01-22
•
Granted: 1961-05-23
•
Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Clyde S Simpelaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:28
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/001; F28D; F28D9/00; F28D9/0081; F28F3/00; F28F3/02; F28F3/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1460805A
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US2143269A
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US2136641A
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US2288061A
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US2360123A
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US2373218A
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US2480706A
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US2782010A
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US2655181A
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US2782009A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |