US2612145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically switching from gas fuel to oil fuel in dual fuel internalcombustion engines
Assignee: Worthington Corp
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Filing: 1951-11-07
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Granted: 1952-09-30
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Expires: 1971-11-07
Abstract
No abstract record available.
Inventors
- 👤 Steven George
- 👤 Roy R Fruehauf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:02
CPC Classifications
F; F02; F02D; F02D19/00; F02D19/06; F02D19/0602; F02D19/0607; F02D19/0663; F02D19/0673; F02D19/0678; F02D19/08; F02D19/10; F02D19/105; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |