Patent FR1497428A successfully refreshed from Google Patents.
Patent US3171016A successfully refreshed from Google Patents.
US3171016A
Expired / Lapsed
US
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Preheating means for internal combustion engines
Assignee: Individual
•
Filing: 1961-03-14
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Granted: 1965-02-23
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Expires: 1981-03-14
Abstract
No abstract record available.
Inventors
- 👤 John M Sukala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:53
CPC Classifications
F; F23; F23Q; F23Q7/00; F23Q7/001; H; H05; H05B; H05B3/00; H05B3/02; H05B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1079320A
Cited
US1227529A
Cited
US1376209A
Cited
CH94924A
Cited
US1553026A
Cited
GB498928A
Cited
US2618731A
Cited
US2783352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |