Patent US3416503A successfully refreshed from Google Patents.
US3416503A
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Engine fume discharge reduction systems
Assignee: Individual
•
Filing: 1967-10-27
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Granted: 1968-12-17
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Expires: 1987-10-27
Abstract
No abstract record available.
Inventors
- 👤 Carl F High
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:13
CPC Classifications
F; F02; F02B; F02B47/00; F02B47/04; F02B47/08; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1456933A
Cited
US1625007A
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US1166560A
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US1222589A
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US1726455A
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US1901847A
Cited
US2096526A
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US2012525A
Cited
US2354179A
Cited
US3232284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |