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Class Information
Number: 137/214
Name: Fluid handling > Diverse fluid containing pressure systems > Gas pressure storage over or displacement of liquid > With liquid level responsive gas vent or whistle > Combined high and low level responsive
Description: Apparatus wherein the gas vent or whistle is opened in response to a high and low liquid level.

Patents under this class:

Patent Number Title Of Patent Date Issued
8365758 Beverage barrel bladder system and apparatus Feb. 5, 2013
5552646 Compact control and monitoring switch Sep. 3, 1996
4499921 Three-way air valve Feb. 19, 1985
4273081 Vent valve for engine cooling systems Jun. 16, 1981

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