US PATENT SUBCLASS 435 / 287.7
.~.~ Including bibulous or absorbent layer

Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

283.1  DF  APPARATUS {9}
287.1  DF  .~ Including measuring or testing {11}
287.7.~.~ Including bibulous or absorbent layer {1}
287.8  DF  .~.~.~> Including multiple, stacked layers

DEFINITION

Classification: 435/287.7

Including bibulous or absorbent layer:

(under subclass 287.1) Apparatus wherein a reagent or sample is contained or placed in an absorbent or bibulous carrier or substrate (e.g., a dip-stick, test paper, wick, etc.).

SEE OR SEARCH CLASS

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing, particularly

55+, for visual or optical indicators, including subclasses 56 and 57 which include absorbent or coated layers.