US2913870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system
Assignee: Individual
•
Filing: 1955-01-19
•
Granted: 1959-11-24
•
Expires: 1975-01-19
Abstract
No abstract record available.
Inventors
- 👤 George E Lashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:01
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1805; F01N1/00; F01N1/08; F01N1/10; F01N13/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB449187A
Cited
US821828A
Cited
US1196382A
Cited
US1294475A
Cited
US1927213A
Cited
US2056608A
Cited
US2078754A
Cited
US2297425A
Cited
US2356782A
Cited
US2519160A
Cited
US2618355A
Cited
US2583366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |