US2670933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine cooling apparatus
Assignee: Individual
•
Filing: 1950-02-24
•
Granted: 1954-03-02
•
Expires: 1970-02-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Bay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:06
CPC Classifications
F; F01; F01M; F01M5/00; F01M5/005; F01M5/007; F01P; F01P3/00; F01P3/20; F01P7/00; F01P7/14; F01P7/16; F01P7/165; F28; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1669; F28F; F28F27/00; F28F27/02; F01P2007/168; F01P2025/00; F01P2025/08; F01P2025/32; F01P2025/40; F01P2025/50; F01P2060/00; F01P2060/04; F28F2250/00; F28F2250/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US447285A
Cited
US1311809A
Cited
US1324865A
Cited
GB232309A
Cited
GB310157A
Cited
US2191627A
Cited
US2425439A
Cited
US2446995A
Cited
US2498637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |