US2649083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercharging four-stroke internal-combustion engine
Assignee: MAN AG
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Filing: 1951-02-05
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Granted: 1953-08-18
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Expires: 1971-02-05
Abstract
No abstract record available.
Inventors
- 👤 Vogel Wilhelm
- 👤 Seifert Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:52
CPC Classifications
F; F02; F02B; F02B27/00; F02B27/005; F02B27/008; F02B27/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |