US2937010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerative heat exchanger
Assignee: Motors Liquidation Co
•
Filing: 1956-01-16
•
Granted: 1960-05-17
•
Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 John S Collman
- 👤 William A Turunen
- 👤 Paul T Vickers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:49
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US902812A
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US1603026A
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US1843252A
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US2112743A
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US2037164A
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US2157744A
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US2615685A
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US2701130A
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US2686154A
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US2792200A
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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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |