US2485392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer with cloth gas-conducting conduit
Assignee: Burgess-Manning Co
•
Filing: 1944-12-13
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Granted: 1949-10-18
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Expires: 1964-12-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Leadbetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/007; F01N1/00; F01N1/003; F01N1/24; F02; F02M; F02M35/00; F02M35/12; F02M35/1205; F02M35/1216; F02M35/1227; F02M35/1233; F16; F16L; F16L55/00; F16L55/02; F01N2310/00; F01N2310/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1916908A
Cited
US2089492A
Cited
US2043731A
Cited
US2271892A
Cited
US2326612A
Cited
US2311676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |