US PATENT SUBCLASS 29 / 890.123
.~.~ Valve stem or tire valve making

Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
890.12  DF  .~ Valve or choke making {5}
890.123.~.~ Valve stem or tire valve making

DEFINITION

Classification: 29/890.123

Valve stem or tire valve making:

(under subclass 890.12) Process including the step of manufacturing (1) connector structure by means of which a disk or plug is moved thereby opening or closing the valve or (2) an elongated valve for use on pneumatic tires.