US2533655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating materials of different specific gravities
Assignee: Wilmot Engineering Co
•
Filing: 1947-04-04
•
Granted: 1950-12-12
•
Expires: 1967-04-04
Abstract
No abstract record available.
Inventors
- 👤 George L Wilmot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:35
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/62; B03B5/623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1990129A
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US2334683A
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US2369878A
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GB558602A
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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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |