Patent US3239152A successfully refreshed from Google Patents.
US3239152A
Expired / Lapsed
US
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Aerating device
Assignee: CHICAGO SPECIALTY Manufacturing Co
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Filing: 1964-05-04
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Granted: 1966-03-08
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Bachli Herman
- 👤 Eugene B Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:13
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A DEVICE FOR AERATING A LIQUID UNDER PRESSURE, COMPRISING A CASING HAVING AN INLET AND AN OUTLET, A SHELL SUPPORTED WITHIN SAID CASING, A PLURALITY OF SCREENS SUPPORTED IN SAID SHELL ADJACENT THE OUTLET THEREOF, EACH SAID SCREEN BEING EMBOSSED TO FORM A PLURALITY OF RADIALLY EXTENDING SEGMENTS, EACH SEGMENT INCLUDING AT ONE END A DEPRESSED SECTION AND AT ITS OPPOSITE END A RAISED SECTION SO THAT
Claim 2
Independent Claim
67 words
A DEVICE FOR AERATING A LIQUID UNDER PRESSURE, COMPRISING A CASING HAVING AN INLET AND AN OUTLET, A SHELL SUPPORTED WITHIN SAID CASING, A PLURALITY OF SCREENS SUPPORTED IN SAID SHELL ADJACENT THE OUTLET THEREOF, EACH SAID SCREEN BEING EMBOSSED TO FORM A PLURALITY OF RADIALLY EXTENDING SEGMENTS, EACH SEGMENT INCLUDING AT ONE END A DEPRESSED SECTION AND AT ITS OPPOSITE END A RAISED SECTION SO THAT
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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 |