Patent US2942685A successfully refreshed from Google Patents.
US2942685A
Expired / Lapsed
US
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Rotary temperature-reducing exhaust silencer
Assignee: Individual
•
Filing: 1959-05-20
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Granted: 1960-06-28
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Expires: 1979-05-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred M Caddell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:53
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/037; F01B; F01B31/00; F01B31/16; F01N1/00; F01N1/08; F01N1/10; F01N3/05; F01N2290/00; F01N2290/02; F01N2290/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |