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3307492
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Information
Patent Grant
3307492
References
Source
Patent Number
3,307,492
Date Filed
Not available
Date Issued
Tuesday, March 7, 1967
58 years ago
CPC
F04B43/023 - double acting plate-like flexible member
F04B11/0033 - with a mechanical spring
F04B43/0036 - the flexible member being formed as an O-ring
F04B53/107 - the opening normally being closed by a fixed element
F04B53/123 - Flexible valves
F04B53/164 - Stoffing boxes
US Classifications
417 - Pumps
092 - Expansible chamber devices
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