Patent US3458122A successfully refreshed from Google Patents.
US3458122A
Expired / Lapsed
US
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Ventilating device for cooling a heat engine
Assignee: S E R M A G SOC D ETUDES ET
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Filing: 1967-06-22
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Granted: 1969-07-29
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Expires: 1987-06-22
Abstract
No abstract record available.
Inventors
- 👤 Francois G Andriussi
- 👤 Pierre A Rouques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:49
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/08; F01P7/081; F01P7/082; F01P7/084; F04; F04D; F04D25/00; F04D25/02; F04D25/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2436072A
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US2519449A
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US2680203A
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US3085407A
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US3382385A
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US3365598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |