Patent US3468295A successfully refreshed from Google Patents.
US3468295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder heads of internal combustion engines
Assignee: Renault SA
•
Filing: 1967-10-16
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Granted: 1969-09-23
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Expires: 1987-10-16
Abstract
No abstract record available.
Inventors
- 👤 Armand M Castarede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:52
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/36; F02F1/38; F02F1/242; F02B; F02B1/00; F02B1/02; F02B1/04; F02F2001/244; F02F2001/245; F02F2200/00; F02F2200/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1608759A
Cited
US2395712A
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US2767694A
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US2974654A
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US2954023A
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US3094977A
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US3219019A
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US3221723A
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US3186387A
Cited
US3306271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |