US PATENT SUBCLASS 454 / 185
HOLLOW PARTITION
Current as of: June, 1999
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DEFINITION
Classification: 454/185
HOLLOW PARTITION:
(under the class definition) Subject matter wherein a barrier of a structure (e.g., wall, floor, roof, etc.) is made hollow for the passage of air to effect ventilation of said structure.
(1) Note. Patents wherein the ventilating transfer means is a duct or conduit within the partition are not to be placed in this subclass.
SEE OR SEARCH CLASS
52, Static Structures (e.g., Buildings)
302.1, for a mere vent communicating with the interior of a partition.
249, Static Molds,
22, and 36+ for molds for forming a partition having a ventilating shaft.
