US2507946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion power plant combining two-shaft opposed-piston engine, air supply compressor, and exhaust-gas turbine
Assignee: Sulzer AG
•
Filing: 1943-02-24
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Granted: 1950-05-16
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Expires: 1963-02-24
Abstract
No abstract record available.
Inventors
- 👤 Waeber Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:18
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/04; F02B37/10; F02B37/105; F02B39/00; F02B39/02; F02B39/04; F02B39/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19633
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2159422A
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US2281821A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |