US2534210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separation
Assignee: Lummus Technology LLC
•
Filing: 1946-02-28
•
Granted: 1950-12-12
•
Expires: 1966-02-28
Abstract
No abstract record available.
Inventors
- 👤 Schutte August Henry
- 👤 Ward F O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:02
CPC Classifications
B; B04; B04B; B04B15/00; B04B15/06; Y; Y10; Y10S; Y10S494/00; Y10S494/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US448373A
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US1732144A
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GB418518A
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US2019944A
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US2313260A
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US2168306A
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US2234916A
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US2325635A
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US2380078A
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US2394016A
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US2394015A
Cited
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 |