Patent US2499018A successfully refreshed from Google Patents.
US2499018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baffle type muffler with plural tubular passages
Assignee: Individual
•
Filing: 1948-01-26
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Granted: 1950-02-28
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Expires: 1968-01-26
Abstract
No abstract record available.
Inventors
- 👤 Christiano Frank
- 👤 Christiano Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:14
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/082; F16; F16L; F16L55/00; F16L55/02
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |