US3521609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling ignition time of automobile engine
Assignee: Mitsubishi Electric Corp
•
Filing: 1967-08-29
•
Granted: 1970-07-28
•
Expires: 1987-08-29
Abstract
No abstract record available.
Inventors
- 👤 Yoshitami Kashiwagi
- 👤 Yasuo Tada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:08
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/05; F02P5/10; F02P5/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR514206A
Cited
US2091924A
Cited
US2503753A
Cited
US2596830A
Cited
US3027884A
Cited
US3043285A
Cited
US3252450A
Cited
US3329136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |