US3448733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary fuel superheater for starting internal combustion engines
Assignee: LEONARD E ASKE
•
Filing: 1967-05-10
•
Granted: 1969-06-10
•
Expires: 1987-05-10
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Aske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:42
CPC Classifications
F; F02; F02P; F02P19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1225381A
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US1446087A
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US1640902A
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US1578693A
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US1503905A
Cited
US1872268A
Cited
US2851027A
Cited
US3055750A
Cited
US3259119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |