US PATENT SUBCLASS 52 / 787.11
.~.~.~ Sound or heat resistant

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

782.1  DF  COMPOSITE PREFABRICATED PANEL INCLUDING ADJUNCTIVE MEANS {7}
783.1  DF  .~ Sandwich or hollow with sheet-like facing members {13}
787.1  DF  .~.~ Having internal receiver for elongated lateral fastener {2}
787.11.~.~.~ Sound or heat resistant

DEFINITION

Classification: 52/787.11

Sound or heat resistant:

(under subclass 787.1) Structure which is insulated to prevent the transfer of acoustical or thermal energy.

SEE OR SEARCH THIS CLASS, SUBCLASS:

783.13, and 784.11+, for a fireproof door.

784.15, for an insulated door.

794.1, for other panels having an insulating core.