US3237399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for regulating aspirated secondary air for exhaust gas conversion
Assignee: Universal Oil Products Co
•
Filing: 1963-11-04
•
Granted: 1966-03-01
•
Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Robert J J Hamblin
- 👤 Frank V Purse
- 👤 William M Sheffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:42
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/22; F01N2270/00; F01N2270/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7871; Y10T137/7874
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
IN COMBINATION WITH AN ENGINE EXHAUST GAS CONVERTER AND A VENTURI-FORM ASPIRATING NOZZLE WHICH PROVIDES EXHAUST GAS AND SECONDARY AIR FLOW TO SAID CONVERTER, AN IM-
Claim 2
Dependent Claim
26 words
IN COMBINATION WITH AN ENGINE EXHAUST GAS CONVERTER AND A VENTURI-FORM ASPIRATING NOZZLE WHICH PROVIDES EXHAUST GAS AND SECONDARY AIR FLOW TO SAID CONVERTER, AN IM-
References Cited (Backward Citations)
US2111611A
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US1781366A
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FR839419A
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US2232981A
Cited
US2649685A
Cited
US2716398A
Cited
US3086353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |