US2995200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust muffler for engines
Assignee: Individual
•
Filing: 1959-10-23
•
Granted: 1961-08-08
•
Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Seifert Vernon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:05
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/082; F01N1/00; F01N1/06; F01N1/08; F01N1/12; F02; F02K; F02K1/00; F02K1/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US734868A
Cited
US1903803A
Cited
US1940790A
Cited
GB366287A
Cited
US1978678A
Cited
US2075316A
Cited
US2552615A
Cited
DE934030C
Cited
US2720935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |