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Class Information
Number: 137/505.17
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > With opening bias (e.g., pressure regulator) > Bias variable during operation > Weight
Description: Devices in which the means comprises a weight varied in accordance with the pressure of the line fluid.

Patents under this class:

Patent Number Title Of Patent Date Issued
5050240 Air cushion helmet support and ventilation system with air pressure regulator Sep. 24, 1991

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