US3587541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine exhaust recirculation
Assignee: Old Carco LLC
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Filing: 1969-03-17
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Granted: 1971-06-28
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Expires: 1989-03-17
Abstract
Abstract CONTROLLED RECYCLING OF AUTOMOBILE EXHAUST GASES THROUGH A BYPASS CONDUIT CONNECTING THE EXHAUST SYSTEM AND THE FUEL AND AIR INLET SYSTEM IS ACCOMPLISHED BY MEANS OF A VENTURI IN THE EXHAUST SYSTEM AT ITS CONNECTION WITH THE BYPASS CONDUIT, AND ALSO BY MEANS OF A PILOT-TYPE OPENING OF THE BYPASS CONDUIT INTO THE INLET SYSTEM.
Inventors
- 👤 Jorma O Sarto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:25
CPC Classifications
F; F02; F02M; F02M26/00; F02M26/13; F02M26/17
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |