Patent US2874627A successfully refreshed from Google Patents.
US2874627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system
Assignee: Individual
•
Filing: 1954-09-03
•
Granted: 1959-02-24
•
Expires: 1974-09-03
Abstract
No abstract record available.
Inventors
- 👤 Francis L Simmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:51
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24F; F24F13/00; F24F13/08; Y; Y10; Y10S; Y10S55/00; Y10S55/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US640484A
Cited
US1553973A
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US1568532A
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US1710586A
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US1885016A
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US2034995A
Cited
US2226641A
Cited
US2392038A
Cited
US2393957A
Cited
US2539344A
Cited
GB591169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |