US2222721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil cooler
Assignee: Motors Liquidation Co
•
Filing: 1936-04-13
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Granted: 1940-11-26
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Expires: 1956-04-13
Abstract
No abstract record available.
Inventors
- 👤 Walter R Ramsaur
- 👤 Charles J O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:34
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0062; F28D9/0075; F01; F01P; F01P11/00; F01P11/08; F16; F16N; F16N39/00; F16N39/02; F28D9/0031; F28D9/0043; F28F; F28F2250/00; F28F2250/10; F28F2250/102; F28F2280/00; F28F2280/06; Y; Y10; Y10S; Y10S165/00; Y10S165/916; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/4938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-11-26 | 1944-05-27 | 1944-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-26 | 1948-05-27 | 1948-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-26 | 1952-05-27 | 1952-11-26 | $7700.00 | Window Closed / Lapsed |