US2714374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four stroke cycle valve timing
Assignee: Individual
•
Filing: 1951-11-26
•
Granted: 1955-08-02
•
Expires: 1971-11-26
Abstract
No abstract record available.
Inventors
- 👤 Hennig Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:32
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190930475A
Cited
US1896163A
Cited
US1927368A
Cited
US2102559A
Cited
US2306580A
Cited
US2649083A
Cited
US2644436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |