Patent US2440310A successfully refreshed from Google Patents.
US2440310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniflow scavenging for engines
Assignee: Atlas Copco AB
•
Filing: 1945-04-06
•
Granted: 1948-04-27
•
Expires: 1965-04-06
Abstract
No abstract record available.
Inventors
- 👤 Thege Edvin Ossian Parcival
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:10
CPC Classifications
F; F02; F02B; F02B25/00; F02B2700/00; F02B2700/03; F02B2700/031
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB369769A
Cited
DE272978C
Cited
US1353100A
Cited
US1485988A
Cited
US1486583A
Cited
US1693506A
Cited
GB320839A
Cited
GB372191A
Cited
US2281821A
Cited
US2228832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |