US PATENT SUBCLASS 239 / 297
.~.~ One or more sets selectively usable

Current as of: June, 1999
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239 /   HD   FLUID SPRINKLING, SPRAYING, AND DIFFUSING

290  DF  INCLUDING SUPPLEMENTAL GAS SHAPING OR SHIELDING JET {8}
296  DF  .~ Plural sets of gas jet orifices {2}
297.~.~ One or more sets selectively usable

DEFINITION

Classification: 239/297

(under subclass 296) Apparatus in which the groups include flow control means such that at least one such group may be used or not as desired.