US2741233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preventing release of contaminants from the exhaust of an internal combustion engine
Assignee: Individual
•
Filing: 1955-09-15
•
Granted: 1956-04-10
•
Expires: 1975-09-15
Abstract
No abstract record available.
Inventors
- 👤 Fred E Mckinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:28
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/02; F02M3/04; F02M3/045; F02M26/00; F02M26/13; F02M26/17; F02M26/21; F02M26/52; F02M26/53; F02D; F02D9/00; F02D9/02; F02D2009/0201; F02D2009/0276; F02M1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1803145A
Cited
US1970002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |