US2684569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air by-pass or surge control for supercharged internal-combustion engines
Assignee: Individual
•
Filing: 1950-05-19
•
Granted: 1954-07-27
•
Expires: 1970-05-19
Abstract
No abstract record available.
Inventors
- 👤 Buchi Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
F; F02; F02B; F02B33/00; F02B33/44; F02B37/00; F02B37/04; F02B37/12; F02B37/16; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1111498A
Cited
US1476418A
Cited
US2306277A
Cited
US2196247A
Cited
US2296268A
Cited
US2404324A
Cited
US2466282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |