US PATENT SUBCLASS 220 / 266
.~.~.~ About line or point of weakness

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
260  DF  .~ With closure opening arrangements for means (e.g., opening devices) {5}
265  DF  .~.~ Frangible member or portion {2}
266.~.~.~ About line or point of weakness {4}
267  DF  .~.~.~.~> With cutting device
268  DF  .~.~.~.~> Non-removable member or portion {1}
270  DF  .~.~.~.~> With gripping means (e.g., pull tab) {4}
276  DF  .~.~.~.~> Line of weakness extends circumferentially of receptacle mouth

DEFINITION

Classification: 220/266

(under subclass 265) Device wherein the rupture or cut is about a predetermined line or point of weakness.

SEE OR SEARCH CLASS

215, Bottles and Jars,

250+, for frangible closures under that class definition.