Patent US2705541A successfully refreshed from Google Patents.
US2705541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: Individual
•
Filing: 1951-07-16
•
Granted: 1955-04-05
•
Expires: 1971-07-16
Abstract
No abstract record available.
Inventors
- 👤 Dan M Finch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:23
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE563018C
Cited
US821828A
Cited
US844669A
Cited
US1766945A
Cited
US1811762A
Cited
US1995071A
Cited
US2138510A
Cited
US2096260A
Cited
GB487816A
Cited
US2373231A
Cited
US2523260A
Cited
US2660256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |