US PATENT SUBCLASS 29 / 890.131
.~.~.~ Including metallurgical bonding

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}
890.124  DF  .~.~ With assembly, disassembly or composite article making {3}
890.131.~.~.~ Including metallurgical bonding

DEFINITION

Classification: 29/890.131

Including metallurgical bonding:

(under subclass 890.124) Process wherein the valve or choke is manufactured employing metal soldering, brazing, or welding.