Patent US2817325A successfully refreshed from Google Patents.
US2817325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for internal combustion engines
Assignee: —
•
Filing: —
•
Granted: 1957-12-24
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Expires: 1974-12-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:12
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/02; F02M3/04; F02M3/045; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0269; F02D2700/0271; Y; Y10; Y10S; Y10S123/00; Y10S123/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |