US PATENT SUBCLASS 29 / 890.054
.~.~ With metallurgical bonding

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

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
890.03  DF  .~ Heat exchanger or boiler making {15}
890.054.~.~ With metallurgical bonding

DEFINITION

Classification: 29/890.054

With metallurgical bonding:

(under subclass 890.03) Process wherein the article made is manufactured employing metal soldering, brazing or welding.