US2640557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retroverted passage type muffler with outer conduit formed of sound absorbing material
Assignee: Fuller Co
•
Filing: 1950-12-13
•
Granted: 1953-06-02
•
Expires: 1970-12-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Gaffney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
F; F01; F01N; F01N13/00; F01N1/00; F01N1/08; F01N1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1057485A
Cited
US1115873A
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US1051130A
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US1553264A
Cited
US1772589A
Cited
US1966620A
Cited
GB461065A
Cited
US2455965A
Cited
GB593282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |