US2914089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm device for separating two different fluids in a cylindrical chamber
Assignee: Individual
•
Filing: 1957-06-10
•
Granted: 1959-11-24
•
Expires: 1977-06-10
Abstract
No abstract record available.
Inventors
- 👤 Allinquant Fernand Stanislas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:38
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2317073A
Cited
US2371632A
Cited
US2638127A
Cited
US2460168A
Cited
US2773511A
Cited
US2764997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |