US2827124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual passage muffler
Assignee: Individual
•
Filing: 1953-11-04
•
Granted: 1958-03-18
•
Expires: 1973-11-04
Abstract
No abstract record available.
Inventors
- 👤 Woodbury George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N1/00; F01N1/08; F01N13/1855; F01N2450/00; F01N2450/24; F01N2450/28; F01N2470/00; F01N2470/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE178815C
Cited
US1038931A
Cited
US702031A
Cited
US1351122A
Cited
US1591088A
Cited
DE428695C
Cited
AT116512B
Cited
US1821688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |