US3326375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid filter devices
Assignee: Rosaen Filter Co
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Filing: 1965-12-06
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Granted: 1967-06-20
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Nils O Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:15
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; B01D35/147; B01D35/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A FILTER DEVICE COMPRISING (A) A HOUSING DEFINING A CHAMBER AND HAVING AN INLET AND AN OUTLET OPEN TO SAID CHAMBER, (B) A FILTER ASSEMBLY REMOVABLY CARRIED IN SAID CHAMBER INTERMEDIATE SAID INLET AND SAID OUTLET, (C) A VALVE MEMBER MOVABLY CARRIED IN SAID CHAMBER AND OPERABLE UPON BEING MOVED TO A CLOSED POSITION TO CLOSE SAID INLET, SAID FILTER ASSEMBLY COMPRISING AN AXIALLY SLIDABLE FILTER ELEMENT POSITIONED IN SAID CHAMBER IN ENGAGEMENT WITH SAID VALVE MEMBER TO NORMALLY RETAIN SAID VALVE MEMBER IN A POSITION OPENING FLUID FLOW FROM SAID INLET THROUGH SAID FILTER ELEMENT AND TO SAID OUTLET, AND
Claim 2
Dependent Claim
101 words
A FILTER DEVICE COMPRISING (A) A HOUSING DEFINING A CHAMBER AND HAVING AN INLET AND AN OUTLET OPEN TO SAID CHAMBER, (B) A FILTER ASSEMBLY REMOVABLY CARRIED IN SAID CHAMBER INTERMEDIATE SAID INLET AND SAID OUTLET, (C) A VALVE MEMBER MOVABLY CARRIED IN SAID CHAMBER AND OPERABLE UPON BEING MOVED TO A CLOSED POSITION TO CLOSE SAID INLET, SAID FILTER ASSEMBLY COMPRISING AN AXIALLY SLIDABLE FILTER ELEMENT POSITIONED IN SAID CHAMBER IN ENGAGEMENT WITH SAID VALVE MEMBER TO NORMALLY RETAIN SAID VALVE MEMBER IN A POSITION OPENING FLUID FLOW FROM SAID INLET THROUGH SAID FILTER ELEMENT AND TO SAID OUTLET, AND
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |