US3418986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for preventing inlet valve wear of supercharged internal combustion engines
Assignee: Daimler Benz AG
•
Filing: 1966-02-25
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Granted: 1968-12-31
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Expires: 1986-02-25
Abstract
No abstract record available.
Inventors
- 👤 Stuttgart-Heumaden Scherenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:41
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01L; F01L3/00; F01L3/24; F01M1/00; F01M1/08; F02; F02B; F02B33/00; F01M2013/026; F01M2013/027; F02M; F02M2700/00; F02M2700/33; F02M2700/331; F02M2700/333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875444A
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US1876160A
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US2271150A
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US2547587A
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US2745392A
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US2738779A
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US3157169A
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US3241534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |