US PATENT SUBCLASS 220 / 236
.~.~.~.~ With retainer

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
233  DF  .~ Externally adjustable plug or gasket {2}
234  DF  .~.~ Closure carried gasket and expander means {2}
235  DF  .~.~.~ Screw actuated {2}
236.~.~.~.~ With retainer

DEFINITION

Classification: 220/236

(under subclass 235) Device wherein means in addition to the deformable means and the expander member are provided for securing the closure to the container.