US PATENT SUBCLASS 44 / 522
.~ Single element having aperture

Current as of: June, 1999
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44 /   HD   FUEL AND RELATED COMPOSITIONS

520  DF  FUEL PRODUCT HAVING PASSAGEWAY FOR GAS {2}
522.~ Single element having aperture

DEFINITION

Classification: 44/522

Single element having aperture:

(under subclass 520) Subject matter in which an integral fuel element has one or more holes in it.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

131+, for an apertured sheet or web in general.