US3083525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for modifying exhaust gases from internal combustion engines
Assignee: Individual
•
Filing: 1961-02-21
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Granted: 1963-04-02
•
Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Charles W Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:31
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26; F01N3/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
AN ASSEMBLY FOR USE IN A MUFFLER TO CONTROL AND PRETREAT DISCHARGE GASES FROM AN INTERNAL COMBUSTION ENGINE, COMPRISING: TWO SPACED PANELS; TWO SPACED PAIRS OF PARTITIONS BETWEEN SAID PANELS AND CONNECTING SAID PANELS EACH OF SAID PAIRS OF PARTITIONS FORMING A VENTURI HAVING A RECTANGULAR TRANSVERSE CROSS SECTION WITH AN ENTRY ZONE,
References Cited (Backward Citations)
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Cited
US1789812A
Cited
US2203554A
Cited
US2851852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |