US2661073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer or muffler
Assignee: OLDBERG Manufacturing CO
•
Filing: 1950-08-09
•
Granted: 1953-12-01
•
Expires: 1970-08-09
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Deremer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:25
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N13/185; F01N1/00; F01N1/02; F01N1/08; F01N1/084; F01N2260/00; F01N2260/18; F01N2450/00; F01N2450/20; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/10; F01N2470/12; F01N2490/00; F01N2490/02; F01N2490/06; F01N2490/08; F01N2490/15; F01N2490/155; F01N2530/00; F01N2530/26
Claims Analysis
Total Claims: 0
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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) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |