US2670724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine regulating system
Assignee: Individual
•
Filing: 1944-11-20
•
Granted: 1954-03-02
•
Expires: 1964-11-20
Abstract
No abstract record available.
Inventors
- 👤 Reggio Ferdinando Carlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:49
CPC Classifications
F; F02; F02D; F02D29/00; F02D2700/00; F02D2700/07; Y; Y10; Y10S; Y10S60/00; Y10S60/913; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |