Patent US2514520A successfully refreshed from Google Patents.
US2514520A
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US
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Muffler with divided flow passages
Assignee: HARRY R LEVY
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Filing: 1946-06-03
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Granted: 1950-07-11
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Expires: 1966-06-03
Abstract
No abstract record available.
Inventors
- 👤 Sauer Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:58
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/12; F01N1/06
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) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |