US PATENT SUBCLASS 404 / 4
.~ Street or curb inlet for surface drainage

Current as of: June, 1999
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404 /   HD   ROAD STRUCTURE, PROCESS, OR APPARATUS

2  DF  DRAIN OR GUTTER {2}
4.~ Street or curb inlet for surface drainage {1}
5  DF  .~.~> Separately attached curb box

DEFINITION

Classification: 404/4

(under subclass 2) Drain or gutter structure with openings to lead water runoff into a drainage system.

SEE OR SEARCH CLASS

4, Baths, Closets, Sinks, and Spittoons,

510, for a pool drain.

137, Fluid Handling,

247.11+, for street curb drainage inlet devices including a liquid seal. 210, Liquid Purification or Separation,

153+, especially subclasses 163+ for structural installations including grated drainage inlets, and subclasses 532.1+ for heavier constituent catch basins comprising street curb inlets.