US2819014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal phase contactor
Assignee: Sharples Corp
•
Filing: 1951-11-19
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Granted: 1958-01-07
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Expires: 1971-11-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Kenneth H Zabriskie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:22
CPC Classifications
C; C10; C10G; C10G19/00; B; B01; B01D; B01D11/00; B01D11/04; B01D11/0446; B01D11/0461; B01F; B01F29/00; B01F29/80; B04; B04B; B04B5/00; B04B5/06
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |