US PATENT SUBCLASS 251 / 86
.~ With universal connection

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

84  DF  VALVE HEAD MOVABLY CONNECTED FOR ACCOMMODATION TO SEAT {4}
86.~ With universal connection

DEFINITION

Classification: 251/86

(under subclass 84) Devices in which the connection permits movement of the head in more than one direction.