US PATENT SUBCLASS 166 / 241.2
.~ On sucker or pump rod

Current as of: June, 1999
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166 /   HD   WELLS

241.1  DF  GUIDE FOR DEVICE OR CONDUIT {3}
241.2.~ On sucker or pump rod {2}
241.3  DF  .~.~> Rotatable or having a rotatable element
241.4  DF  .~.~> Surrounding existing rod

DEFINITION

Classification: 166/241.2

On sucker or pump rod:

(under subclass 241.1) Apparatus in which a fluid moving structure is positioned centrally within a fluid conveying means.