US PATENT SUBCLASS 217 / 78
.~.~ Expanding
Current as of: June, 1999
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DEFINITION
Classification:        217/78  
(under subclass 76) Closures held in position by expanding  part or parts of the head.  
SEE OR SEARCH THIS CLASS, SUBCLASS: 
108, and 109, for expanding bungs.  
SEE OR SEARCH CLASS 
215, Bottles and Jars,  
358+, for expanding stoppers.  
220, Receptacles,  233+, for expansible plugs.