US2991338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum spark advance for ignition systems
Assignee: ACF Industries Inc
•
Filing: 1958-10-02
•
Granted: 1961-07-04
•
Expires: 1978-10-02
Abstract
No abstract record available.
Inventors
- 👤 Edward M Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:18
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/05; F02P5/10; F02P5/103; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2302685A
Cited
US2640116A
Cited
US2643304A
Cited
US2628296A
Cited
US2717286A
Cited
US2922002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |