Patent US3413803A successfully refreshed from Google Patents.
US3413803A
Expired / Lapsed
US
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Exhaust manifold reaction system and apparatus
Assignee: EIDP Inc
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Filing: 1967-02-24
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Granted: 1968-12-03
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Expires: 1987-02-24
Abstract
No abstract record available.
Inventors
- 👤 Rosenlund Iver Theodore
- 👤 Douthit Walter Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:49
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26; F01N13/00; F01N13/08; F01N13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3247666A
Cited
US3302394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |