US PATENT SUBCLASS 428 / 64.1
CIRCULAR SHEET OR CIRCULAR BLANK

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

64.1CIRCULAR SHEET OR CIRCULAR BLANK {8}
64.2  DF  .~> Recording medium or carrier {5}
66.1  DF  .~> Gear
66.2  DF  .~> Frictional
66.3  DF  .~> End closure
66.4  DF  .~> Seal, gasket, or packing
66.5  DF  .~> Ornamental, decorative, pattern, or indicia
66.6  DF  .~> Aperture containing
66.7  DF  .~> Edge structure

DEFINITION

Classification: 428/64.1

CIRCULAR SHEET OR CIRCULAR BLANK:

(under the class definition) Product whose outer boundary is that of a single curved line every point of which is substantially the same distance from a point at the center thereof.