US2637305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger for internal-combustion engines
Assignee: BADGER Manufacturing Co
•
Filing: 1950-03-30
•
Granted: 1953-05-05
•
Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 Albert C Buffum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:51
CPC Classifications
F; F02; F02G; F02G5/00; F02G5/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE150004C
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FR353613A
Cited
US1529070A
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CH95448A
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US1495088A
Cited
CH111854A
Cited
DE525637C
Cited
US1827113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |