Patent US4019440A successfully refreshed from Google Patents.
Patent US2930440A successfully refreshed from Google Patents.
US2930440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system
Assignee: Motors Liquidation Co
•
Filing: 1957-09-30
•
Granted: 1960-03-29
•
Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 George L Fetzer
- 👤 Leonard M Morrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:34
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N13/185; F01N1/00; F01N1/02; F01N13/02; F01N2450/00; F01N2450/20; F01N2470/00; F01N2470/10; F01N2470/30; F01N2490/00; F01N2490/15; F01N2490/155
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |