US PATENT SUBCLASS 137 / 280
.~ Plural riser

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

272  DF  HYDRANT TYPE {15}
280.~ Plural riser

DEFINITION

Classification: 137/280

(under subclass 272) Apparatus in which at least part of the riser is divided into plural parallel fluid flow passages.

SEE OR SEARCH THIS CLASS, SUBCLASS:

294+, for hydrant risers having a casing or housing which is not a flow path but merely a support or protector.