US PATENT SUBCLASS 52 / 197
.~ Bottom outlet port; e.g., hopper bottom

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

192  DF  FLUENT MATERIAL HOPPER OR STORAGE CONTAINER WITH MATERIAL PORT {5}
197.~ Bottom outlet port; e.g., hopper bottom

DEFINITION

Classification: 52/197

(under subclass 192) Structure in which the port is located in the bottom, i.e., floor of the container or receptacle structure.