US PATENT SUBCLASS 52 / 407.5
.~.~ Insulation defines air enclosing cell or compartment

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}
407.1  DF  .~ Filler spaced from inside face of cavity {4}
407.5.~.~ Insulation defines air enclosing cell or compartment

DEFINITION

Classification: 52/407.5

Insulation defines air enclosing cell or compartment:

(under subclass 407.1) Spaced filler wherein the insulating filler forms spaced apart air-enclosing chambers.