US2672852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber for four cycle diesel engines
Assignee: Nordberg Manufacturing Co
•
Filing: 1948-09-21
•
Granted: 1954-03-23
•
Expires: 1968-09-21
Abstract
No abstract record available.
Inventors
- 👤 Miller Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:02
CPC Classifications
F; F02; F02B; F02B3/00; F02B2720/00; F02B2720/22; F02B2720/226; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2394576A
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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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |