Patent US3246184A successfully refreshed from Google Patents.
Patent US3022775A successfully refreshed from Google Patents.
US3022775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder heads for internal combustion engines
Assignee: Individual
•
Filing: 1960-09-26
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Granted: 1962-02-27
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Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Christiaan H Bouvy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:55
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/36; F02F1/38; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/047; F01L1/053; F01L1/0532; F02B; F02B2275/00; F02B2275/20; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1647848A
Cited
US1889583A
Cited
US2182990A
Cited
US2700969A
Cited
US2769438A
Cited
US2963015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |