Patent US2266752A successfully refreshed from Google Patents.
US3239062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable filter assembly
Assignee: Rosaen Filter Co
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Filing: 1962-10-15
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Granted: 1966-03-08
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 Nils O Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:16
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D27/00; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/56; B01D29/58; B01D35/143; B01D35/147
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
A FILTER DEVICE COMPRISING (A) AN OUTER HOUSING HAVING AN INLET AND AN OUTLET, (B) SAID HOUSING HAVING A CHAMBER, (C) A CAP MEMBER AND A FIRST MEANS REMOVABLT SECURING SAID CAP MEMBER TO SAID OUTER HOUSING TO CLOSE ONE END OF SAID CHAMBER, (D) AN INNER HOUSING AND A SECOND MEANS SECURING SAID INNER HOUSING TO SAID CAP MEMEBER TO EXTEND INTO SAID CHAMBER TO DEFINE A SUBSTANTIALLY ANNULAR OUTLET CHAMBER INTERMEDIATE SAID INNER HOUSING AND SAID OUTER HOUSING, (E) A FILTER ELEMENT SECURED TO SAID CAP MEMBER BY SAID SECOND MEANS AND EXTENDING INTO SAID INNER HOUSING TO DEFINE A SUBSTANTIALLY ANNULAR INLET CHAMBER INTERMEDIATE SAID INNER HOUSING AND SAID FILTER ELEMENT, (F) SAID INNER HOUSING HAVING INLET MEANS CONNECTING SAID INLET WITH SAID INLET CHAMBER AND OUTLET MEANS CONNECTING THE OUTLET SIDE OF SAID FILTER ELEMENT WITH SAID OUTLET CHAMBER,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |