US2859016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Motors Liquidation Co
•
Filing: 1957-11-04
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Granted: 1958-11-04
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Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Max Ephraim
- 👤 John F Novacek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:06
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/08; F28; F28F; F28F9/00; F28F9/001; Y; Y10; Y10S; Y10S165/00; Y10S165/916; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR45360E
Cited
US2373157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |