US3503376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine ignition timer
Assignee: Individual
•
Filing: 1967-08-14
•
Granted: 1970-03-31
•
Expires: 1987-08-14
Abstract
No abstract record available.
Inventors
- 👤 Brooks Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:55
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)
US2732833A
Cited
US2455594A
Cited
US2470366A
Cited
US2545709A
Cited
US2650581A
Cited
US2867197A
Cited
US3329136A
Cited
US3272191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |