US PATENT SUBCLASS 434 / 281
.~ Model or display demonstrating structure or property of atom or radical

Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

276  DF  SCIENCE {9}
281.~ Model or display demonstrating structure or property of atom or radical {1}
282  DF  .~.~> Indicia chart (e.g., periodic table, etc.)

DEFINITION

Classification: 434/281

Model or display demonstrating structure or property of atom or radical:

(under subclass 276) Subject matter relating to a representation of the arrangement or characteristics of an atom or group of atoms that act as a unit in a chemical reaction.