US3504769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine including lubrication system
Assignee: Kloeckner Humboldt Deutz AG
•
Filing: 1967-08-21
•
Granted: 1970-04-07
•
Expires: 1987-08-21
Abstract
No abstract record available.
Inventors
- 👤 Hermann Mettig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:04
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/10; F01M1/02; F01M11/00; F01M11/03; F01M2001/0284; F01M2001/1007; F01M2001/1014; F01M11/0004; F01M2011/007; F01M2011/031; F01M2011/036; F02; F02F; F02F7/00; F02F7/0065; F02F7/0073
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1846072A
Cited
US1913193A
Cited
US2801006A
Cited
US2897966A
Cited
US3023846A
Cited
US3087582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |