Patent US4841278A successfully refreshed from Google Patents.
Patent US2873731A successfully refreshed from Google Patents.
US2873731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine control device
Assignee: Tecumseh Products Co
•
Filing: 1956-02-27
•
Granted: 1959-02-17
•
Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 John W Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:25
CPC Classifications
F; F02; F02B; F02B63/00; F02B63/02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0202; F02D2700/0207; F02D2700/021; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US691968A
Cited
US1710002A
Cited
US2480083A
Cited
US2460693A
Cited
US2584055A
Cited
US2634670A
Cited
US2606545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |