US PATENT SUBCLASS 52 / 406.2
.~.~ Self-contained insulating unit

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

404.1  DF  INSULATING INSERT; E.G., FILLER IN CAVITY IN PRECONSTRUCTED OR CAST STRUCTURE {7}
406.1  DF  .~ Enveloped-type filler {2}
406.2.~.~ Self-contained insulating unit

DEFINITION

Classification: 52/406.2

Self-contained insulating unit:

(under subclass 406.1) Enveloped filler wherein the filler material is within a specific wrapping.