US3394689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant ignition system
Assignee: Individual
•
Filing: 1966-08-25
•
Granted: 1968-07-30
•
Expires: 1986-08-25
Abstract
No abstract record available.
Inventors
- 👤 Laurence W Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:24
CPC Classifications
F; F02; F02P; F02P15/00; F02P15/10; F02P15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3173410A
Cited
US3327165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |