US PATENT SUBCLASS 137 / 901
BIASED BALL VALVES WITH OPERATORS
Current as of:
June, 1999
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137 /
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FLUID HANDLING
901
BIASED BALL VALVES WITH OPERATORS
DEFINITION
Classification: 137/901
BIASED BALL VALVES WITH OPERATORS:
(under the class definition) Art collection drawn to biased
ball valves with operators.
