US PATENT SUBCLASS 29 / 890.121
.~.~ Repairing, converting, servicing or salvaging


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}
890.121.~.~ Repairing, converting, servicing or salvaging


DEFINITION

Classification: 29/890.121

Repairing, converting, servicing or salvaging:

(under subclass 890.12) Process wherein an existing valve or choke is (1) restored or otherwise put in a more functional, stable or improved working condition; (2) mechanically modified or altered to produce an article of substantially different capacity, size, function or type of operation; or (3) treated to recover a portion of the whole thereof which would otherwise constitute discarded material or using such material in a process of mechanical manufacturing.

(1) Note. See the definition of "repair" in Class 29 Glossary in the Class Definition.

(2) Note. Making a replacement part, per se, is not found in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

401.1, for a process of converting. Also see the search notes thereunder.

402.01+, for a process of repairing. Also see the search notes thereunder.

403.1+, for a process including scrap recovery or utilization. Also see the search notes thereunder.