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US2968296A
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Ignition systems for multi-cylinder engines
Assignee: ECONOMY ENGINE Co
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Filing: 1958-03-21
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Granted: 1961-01-17
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Expires: 1978-03-21
Abstract
No abstract record available.
Inventors
- 👤 Frank J Kaehni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:54
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/02; F02P3/04; F02P3/055; F02P3/0552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1589489A
Cited
US2436905A
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US1343943A
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US2131020A
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US2852589A
Cited
US2878298A
Cited
FR1137949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |