US PATENT SUBCLASS 220 / 217
.~.~ With liquid gasket
Current as of: June, 1999
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DEFINITION
Classification: 220/217
(under subclass 216) Devices including a confined liquid acting at the juncture of the closure and the receptacle mouth to prevent the escape of gaseous contents.
SEE OR SEARCH THIS CLASS, SUBCLASS:
228, for liquid or semiliquid gaskets in general.