US2660258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baffle type muffler with a plurality of outlet conduits
Assignee: Maxim Silencer Co
•
Filing: 1951-04-14
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Granted: 1953-11-24
•
Expires: 1971-04-14
Abstract
No abstract record available.
Inventors
- 👤 Roland B Bourne
- 👤 John P Tyskewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:53
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH56216A
Cited
US2078754A
Cited
US2297046A
Cited
US2337299A
Cited
US2457890A
Cited
US2513229A
Cited
US2537203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |