US3396813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer or muffler and method of producing same
Assignee: APX GROUP Inc
•
Filing: 1967-04-26
•
Granted: 1968-08-13
•
Expires: 1987-04-26
Abstract
No abstract record available.
Inventors
- 👤 James R Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:23
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N1/00; F01N1/003; F01N2450/00; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1838249A
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US1972065A
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FR877911A
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US2485392A
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US2553326A
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US2872998A
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US3159239A
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US3274678A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |