US2575568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal gas-liquid separator
Assignee: Gulf Research and Development Co
•
Filing: 1946-11-12
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Granted: 1951-11-20
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Expires: 1966-11-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Topanelian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:46
CPC Classifications
F; F02; F02M; F02M1/00; F01; F01M; F01M13/00; F01M13/04; F01M2013/0422; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4392
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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |