US2690812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler construction
Assignee: GOERLICH S
•
Filing: 1950-05-09
•
Granted: 1954-10-05
•
Expires: 1970-05-09
Abstract
No abstract record available.
Inventors
- 👤 Raymond K Sparrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:45
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N1/00; F01N1/08; F01N2450/00; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/18; F01N2510/00; F01N2530/00; F01N2530/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US781939A
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US877431A
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US1512859A
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US1542829A
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US1732909A
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US2144725A
Cited
US2189424A
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US2277132A
Cited
US2357791A
Cited
FR882317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |