US2432362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Lummus Technology LLC
•
Filing: 1942-08-01
•
Granted: 1947-12-09
•
Expires: 1962-08-01
Abstract
No abstract record available.
Inventors
- 👤 George A Worn
- 👤 Edward A Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:40
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/26; F28D; F28D7/00; F28D7/06; F28F19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18127E
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US724750A
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US1140956A
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US1135422A
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US1787021A
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US1828344A
Cited
US1882116A
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US1896261A
Cited
GB418853A
Cited
FR852162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |