US2642052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine crankcase breather and oil separator
Assignee: Caterpillar Inc
•
Filing: 1952-10-25
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Granted: 1953-06-16
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Expires: 1972-10-25
Abstract
No abstract record available.
Inventors
- 👤 Harold H Wagner
- 👤 Edred B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:30
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; B; B01; B01D; B01D27/00; B01D27/02; F01M2013/0438; F01M2013/0488; F02; F02F; F02F7/00; F02F7/0065; F02F7/0073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |