Patent US296454A successfully refreshed from Google Patents.
Patent US4608089A successfully refreshed from Google Patents.
Patent US260764A successfully refreshed from Google Patents.
Patent US4304433A successfully refreshed from Google Patents.
Patent US2960178A successfully refreshed from Google Patents.
US2960178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine exhaust system
Assignee: Motors Liquidation Co
•
Filing: 1958-11-24
•
Granted: 1960-11-15
•
Expires: 1978-11-24
Abstract
No abstract record available.
Inventors
- 👤 Lorean John Z De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:22
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; B; B60; B60K; B60K13/00; B60K13/04; F01N13/082; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1560947A
Cited
US1615564A
Cited
US1709426A
Cited
GB446915A
Cited
US2078420A
Cited
US2658580A
Cited
US2833479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |