Patent US3174583A successfully refreshed from Google Patents.
US3174583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler for internal combustion engines
Assignee: Individual
•
Filing: 1961-10-03
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Granted: 1965-03-23
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Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Giordano Michele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:29
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB328487A
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US2019746A
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US2014666A
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US2244393A
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US2353914A
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US2404617A
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US2523260A
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US2583366A
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US2557687A
Cited
FR1129207A
Cited
US3016108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |