Patent US2928499A successfully refreshed from Google Patents.
US2928499A
Expired / Lapsed
US
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Lubricating system for an internal combustion engine
Assignee: Daimler Benz AG
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Filing: 1956-03-26
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Granted: 1960-03-15
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Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 Friedrich K H Nallinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:25
CPC Classifications
F; F16; F16N; F16N39/00; F16N39/06; B; B01; B01D; B01D29/00; B01D29/11; B01D29/114; B01D29/50; B01D29/56; B01D29/58; B01D35/00; B01D35/14; B01D35/147; B01D35/153; B01D35/157; F01; F01M; F01M1/00; F01M1/10; B01D2201/00; B01D2201/18; B01D2201/188
Claims Analysis
Total Claims: 0
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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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |