US2773348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbo-charger system, involving plural turbine driven superchargers
Assignee: Nordberg Manufacturing Co
•
Filing: 1952-03-27
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Granted: 1956-12-11
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Expires: 1972-03-27
Abstract
No abstract record available.
Inventors
- 👤 Grieshaber Emil
- 👤 Paul S Shirley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:57
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/007; F02B33/00; F02B33/44; F02B37/12; F02B37/22; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2082780A
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US2201682A
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US2296268A
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US2245163A
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US2359615A
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US2380777A
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US2612751A
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US2582916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |