Patent US2834426A successfully refreshed from Google Patents.
US2834426A
Expired / Lapsed
US
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Muffler
Assignee: NU FLO PRODUCTS Inc
•
Filing: 1954-11-08
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Granted: 1958-05-13
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Expires: 1974-11-08
Abstract
No abstract record available.
Inventors
- 👤 Lindon D Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:58
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1021254A
Cited
US1061775A
Cited
FR729253A
Cited
DE646735C
Cited
US2241010A
Cited
US2287412A
Cited
DE726028C
Cited
US2392247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |