US PATENT SUBCLASS 220 / 361
.~ Sealing or closing means for vent or filling opening

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
361.~ Sealing or closing means for vent or filling opening {3}
362  DF  .~.~> By crimping
363  DF  .~.~> Nonmetallic
364  DF  .~.~> By application of hardenable material {1}

DEFINITION

Classification: 220/361

(under subclass 200) Device wherein the closure is provided with a vent or filling opening and such vent or opening is provided with means to seal or otherwise close it off.