Patent US3087000A successfully refreshed from Google Patents.
US3087000A
Expired / Lapsed
US
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Ignition system for combustion engines
Assignee: Individual
•
Filing: 1961-05-29
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Granted: 1963-04-23
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Russell R Krone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:58
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/06; F02P7/063; F02P7/0632; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1177496A
Cited
US1221176A
Cited
US2245402A
Cited
US2510067A
Cited
US2920378A
Cited
US2829622A
Cited
US3007234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |