US2648496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal apparatus for separating gases from liquids
Assignee: Wyeth Holdings LLC
•
Filing: 1946-12-03
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Granted: 1953-08-11
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Expires: 1966-12-03
Abstract
No abstract record available.
Inventors
- 👤 Cresswell Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:27
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/10; D01D1/103; B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; B04; B04B; B04B15/00; B04B15/08; Y; Y10; Y10S; Y10S494/00; Y10S494/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1101548A
Cited
FR374281A
Cited
GB190925761A
Cited
US1004760A
Cited
US1123867A
Cited
DE610305C
Cited
GB373560A
Cited
US2222727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |