US PATENT SUBCLASS 422 / 56
.~.~ Having reagent in absorbent or bibulous substrate

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

50  DF  ANALYZER, STRUCTURED INDICATOR, OR MANIPULATIVE LABORATORY DEVICE {11}
55  DF  .~ Structured visual or optical indicator, per se {3}
56.~.~ Having reagent in absorbent or bibulous substrate

DEFINITION

Classification: 422/56

Having reagent in absorbent or bibulous substrate:

(under subclass 55) Apparatus wherein indicating reagent is contained in absorbent or bibulous carrier or substrate; e.g., a dip-stick, test paper, wick, etc.