Patent US2532888A successfully refreshed from Google Patents.
US2532888A
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US
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Crankcase pressure control
Assignee: Air Maze Corp
•
Filing: 1948-12-09
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Granted: 1950-12-05
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Expires: 1968-12-09
Abstract
No abstract record available.
Inventors
- 👤 Richard E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:47
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/0011; F01M13/0033; Y; Y10; Y10S; Y10S55/00; Y10S55/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |