US3447629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive exhaust system and muffler therefor
Assignee: Meritor Inc
•
Filing: 1967-02-06
•
Granted: 1969-06-03
•
Expires: 1987-02-06
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Placek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:14
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/02; F01N1/08; F01N1/084; F01N2490/00; F01N2490/15; F01N2490/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1499683A
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US2297046A
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US3044571A
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US3107748A
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US3090677A
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US3114432A
Cited
US3220805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |