US PATENT SUBCLASS 428 / 44
TWO DIMENSIONALLY SECTIONAL LAYER

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

44TWO DIMENSIONALLY SECTIONAL LAYER {4}
45  DF  .~> With frame, casing, or perimeter structure
46  DF  .~> Transparent or translucent layer or section
47  DF  .~> Next to unitary web or sheet of equal or greater extent {2}
52  DF  .~> Sections connected flexibly with external fastener

DEFINITION

Classification: 428/44

(under the class definition) Product containing a single layer* of at least three separate, discrete and identifiable parts both laterally and longitudinally associated (i.e., in a nonthickness direction) so that it is impossible to draw a single straight line through the geometric center of all the parts of the single layer*.

(1) Note. Excluded under this definition is a web or sheet having a perimeter structure which appears to meet the definition. The identifiable parts in this subclass do not have any additional structure at the perimeter thereof. A floor of tile squares is exemplary of the subject matter in this locus.