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US2835336A
Expired / Lapsed
US
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Silencer or muffler
Assignee: OLDBERG Manufacturing CO
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Filing: 1953-07-15
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Granted: 1958-05-20
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Expires: 1973-07-15
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Deremer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:38
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N1/00; F01N1/02; F01N13/185; F01N2260/00; F01N2260/18; F01N2450/00; F01N2450/20; F01N2470/00; F01N2470/10; F01N2470/12; F01N2490/00; 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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |