US PATENT SUBCLASS 424 / 550
.~ Digestive system (e.g., salivary gland, etc.)

Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

520  DF  EXTRACT, BODY FLUID, OR CELLULAR MATERIAL OF UNDETERMINED CONSTITUTION DERIVED FROM ANIMAL IS ACTIVE INGREDIENT {21}
550.~ Digestive system (e.g., salivary gland, etc.) {1}
551  DF  .~.~> Gastrointestinal system (e.g., intestine, stomach, gall bladder, etc.) {2}

DEFINITION

Classification: 424/550

Digestive system (e.g., salivary gland, etc.):

(under subclass 520) Subject matter in which the material is or is derived from a part of the digestive system; e.g., salivary gland, etc.

(1) Note. Included in this and the indented subclasses are: Biliary Tract; Bile Ducts; Gallbladder; Esophagus