US3472216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine ignition system
Assignee: WILLIS D CLYBORNE
•
Filing: 1968-03-06
•
Granted: 1969-10-14
•
Expires: 1988-03-06
Abstract
No abstract record available.
Inventors
- 👤 Willis D Clyborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:53
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/06; F02P7/073; F02P3/00; F02P3/06; F02P3/08; F02P3/0876; F02P3/0884
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2984695A
Cited
US3163700A
Cited
US3383556A
Cited
US3368539A
Cited
US3395684A
Cited
US3395686A
Cited
US3418989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |