US2958389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer or muffler
Assignee: OLDBERG Manufacturing CO
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Filing: 1957-04-08
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Granted: 1960-11-01
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Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Deremer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:32
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N1/00; F01N1/02; F01N13/1844; F01N13/185; F01N13/14; F01N2310/00; F01N2310/02; F01N2450/00; F01N2450/20; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/10; F01N2490/00; F01N2490/02; F01N2490/06; F01N2490/15; F01N2490/155; F01N2530/00; F01N2530/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |