Patent US2758672A successfully refreshed from Google Patents.
US2758672A
Expired / Lapsed
US
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Engine crankcase breather and air-oil separator
Assignee: Curtiss Wright Corp
•
Filing: 1953-09-29
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Granted: 1956-08-14
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Expires: 1973-09-29
Abstract
No abstract record available.
Inventors
- 👤 John R Anderson
- 👤 Hoexter Rolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:06
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; F01M2013/0422
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1303207A
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US1311811A
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US1741774A
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US1979025A
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FR371147A
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FR620108A
Cited
US1822659A
Cited
US1872609A
Cited
US1958816A
Cited
FR862177A
Cited
US2569567A
Cited
FR1012887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |