US PATENT SUBCLASS 215 / 270
.~ With pressure-responsive seal

Current as of: June, 1999
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215 /   HD   BOTTLES AND JARS

200  DF  CLOSURES {32}
270.~ With pressure-responsive seal

DEFINITION

Classification: 215/270

(under subclass 200) Devices, wherein the closure is provided with sealing means which is responsive to a pressure differential existing between the container interior and the ambient to effect sealing of the closure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

260, for a closure with a pressure responsive valve.