Patent US4168627A successfully refreshed from Google Patents.
US3286703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor fuel heater for internal combustion engines
Assignee: Individual
•
Filing: 1964-11-13
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Granted: 1966-11-22
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Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Sr Avery M Rawles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:42
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/10; F02M15/00; F02M15/02; F02M15/025; F02M5/00; F02M5/12; F02M5/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |