US3524316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for combusting internal combustion engine exhaust pollutants
Assignee: DESMOND JOHN J
•
Filing: 1968-07-31
•
Granted: 1970-08-18
•
Expires: 1988-07-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Mckee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:29
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26; F01N3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1741939A
Cited
US2806346A
Cited
US3146072A
Cited
US3228755A
Cited
US3285709A
Cited
US3350878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |