US PATENT SUBCLASS 52 / 576
HAVING MEANS (E.G., HOLLOW FORM OR CORE) FORMING CAVITY, CORE, OR CELL IN SLAB

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

576HAVING MEANS (E.G., HOLLOW FORM OR CORE) FORMING CAVITY, CORE, OR CELL IN SLAB {1}
577  DF  .~> Thin-walled type (e.g., can)

DEFINITION

Classification: 52/576

(under the class definition) Structure including a module having a preformed member formed of a material closing on itself and embedded therein, thus forming a cavity within the preshape.

SEE OR SEARCH THIS CLASS, SUBCLASS:

577, for an embedded type void former, per se, and see references under "SEARCH THIS CLASS, SUBCLASS" for other subclasses relating to a construction with a void therein.