US2500234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor surge control for exhaust turbine driven superchargers
Assignee: Unisys Corp
•
Filing: 1944-02-12
•
Granted: 1950-03-14
•
Expires: 1964-02-12
Abstract
No abstract record available.
Inventors
- 👤 Mortimer F Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:04
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/16; F02B37/18; F02B37/183; F02B37/186; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR495472A
Cited
US1346124A
Cited
US1774738A
Cited
US1955799A
Cited
US2139090A
Cited
US2305810A
Cited
US2283694A
Cited
US2355759A
Cited
US2380777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |