Patent US2612349A successfully refreshed from Google Patents.
US2612349A
Expired / Lapsed
US
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Radiator type heat exchanger
Assignee: A R LINTERN Inc
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Filing: 1950-04-10
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Granted: 1952-09-30
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Expires: 1970-04-10
Abstract
No abstract record available.
Inventors
- 👤 Alfred R Lintern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:10
CPC Classifications
F; F28; F28F; F28F27/00; F28F27/02; B; B60; B60H; B60H1/00; B60H1/00321; B60H1/00328
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1547861A
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FR343713A
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US828961A
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US1668491A
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US1717770A
Cited
US1843295A
Cited
US2032660A
Cited
GB506012A
Cited
US2164628A
Cited
US2118263A
Cited
US2444958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |