US PATENT SUBCLASS 217 / 42
.~.~ Ventilating
Current as of: June, 1999
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DEFINITION
Classification:        217/42  
(under subclass 36) Crates having means by which ventilation  of the crate and its contents is effected.  
SEE OR SEARCH CLASS 
454, Ventilation,  
77, for ventilation of an aircraft cargo cabin, subclass 79  for ventilation of a cargo hold on-board a ship, subclass 88  for ventilation of a freight-carrying railcar or trailer, and  subclass 118 for the ventilation of other freight-carrying  vehicles.