US PATENT SUBCLASS 99 / 646 S
.~ Silos

Current as of: June, 1999
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99 /   HD   FOODS AND BEVERAGES: APPARATUS

646 R  DF  MISCELLANEOUS {3}
646 S.~ Silos

Unofficial Alpha Subclasses: R S C LS

DEFINITION

Classification: 99/646

(under the class definition) Device not provided for above.

(1) Note. This subclass is the locus of silo-like containers with "breathing" means.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

192, 223.3, and 245+ for silo structures, per se.

454, Ventilation,

173+, for pressure maintenance or ventilation of a storage structure.