US2471509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inlet and exhaust valve mechanism with associated turbocharger
Assignee: Nordberg Manufacturing Co
•
Filing: 1947-05-09
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Granted: 1949-05-31
•
Expires: 1967-05-09
Abstract
No abstract record available.
Inventors
- 👤 Anderson Karl Volmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:00
CPC Classifications
F; F02; F02B; F02B37/00; F01; F01L; F01L1/00; F01L1/28; F01L1/285; F02C; F02C6/00; F02C6/04; F02C6/10; F02C6/12; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1191150A
Cited
US2198679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |