Patent US3427311A successfully refreshed from Google Patents.
Patent USRE27908E successfully refreshed from Google Patents.
USRE27908E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid contact tray
Assignee: —
•
Filing: 1971-07-26
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Granted: 1974-01-29
•
Expires: 1991-07-26
Abstract
Abstract A FLUID CONTACT TRAY HAVING A PLURALITY OF TAPERING APERTURES THEREIN, THE MAJOR DIMENSION OF THE APERTURES LYING IN THE DIRECTION OF LIQUID FLOW ACROSS THE TRAY. A DEFLECTOR IS SUPPORTED ABOVE EACH APERTURE BY A PAIR OF TRANSVERSELY EXTENDING BAFFLES ONE AT EACH END OF EACH APERTURE.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:51
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |