US PATENT SUBCLASS 29 / 890.052
.~.~ Header or manifold making

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}
890.052.~.~ Header or manifold making

DEFINITION

Classification: 29/890.052

Header or manifold making:

(under subclass 890.03) Process wherein the article made includes a conduit or chamber for distributing fluid from a series of smaller conduits.