US2682852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine engine cooling device
Assignee: Individual
•
Filing: 1952-05-22
•
Granted: 1954-07-06
•
Expires: 1972-05-22
Abstract
No abstract record available.
Inventors
- 👤 Mario A Ruffolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:26
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0206; F28D1/022; F01; F01P; F01P3/00; F01P3/20; F01P3/207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US714077A
Cited
US897532A
Cited
GB107466A
Cited
GB262414A
Cited
US2258526A
Cited
US2466525A
Cited
US2612858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |