Patent US3425780A successfully refreshed from Google Patents.
US3425780A
Expired / Lapsed
US
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Fluid fuel igniter control system
Assignee: Liberty Combustion Corp
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Filing: 1966-09-26
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Granted: 1969-02-04
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Expires: 1986-09-26
Abstract
No abstract record available.
Inventors
- 👤 William F Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:22
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23Q; F23Q3/00; F23Q3/004; F23N2227/00; F23N2227/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1762555A
Cited
US2655209A
Cited
US2985797A
Cited
US3027933A
Cited
US3238992A
Cited
US3318358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |