US3606985A
Expired / Lapsed
US
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Apparatus for controlling the flow of gases
Assignee: Zinklahoma Inc
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Filing: 1969-04-30
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Granted: 1971-09-21
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Expires: 1989-04-30
Abstract
Abstract APPARATUS FOR CONTROLLING THE FLOW OF A GASEOUS MEDIUM WHEREIN BAFFLES WITHIN A TUBULAR MEMBER FORM SEPARATE CHAMBERS FOR RECEIVING THE GASEOUS MEDIUM EACH HAVING ITS OWN EXIT PORTS WHICH ARE AT DIFFERENT LOCATIONS BELOW THE LEVEL OF A QUANTITY OF LIQUID AND PROVIDE FOR THE PROGRESSIVE RELEASE OF THE GASEOUS MEDIUM FROM THE RESPECTIVE CHAMBERS FOR BUBBLING THROUGH THE LIQUID WITHOUT SIGNIFCANTLY DISTURBING THE LIQUID BELOW THE LEVEL WHERE THE GAS IS FLOWING THROUGH THE EXIT PORTS.
Inventors
- 👤 Robert D Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:14
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; B; B01; B01J; B01J4/00; B01J4/001; F16; F16K; F16K13/00; F16K13/08; F16K13/10; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643; Y10T137/4666
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |