US PATENT SUBCLASS 232 / 51
.~.~.~.~ Integral door

Current as of: June, 1999
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232 /   HD   DEPOSIT AND COLLECTION RECEPTACLES

44  DF  CLOSURES AND CHUTES {4}
45  DF  .~ Letter box {4}
47  DF  .~.~ Pivoted trap {3}
49  DF  .~.~.~ Pocket {2}
51.~.~.~.~ Integral door

DEFINITION

Classification: 232/51

(under subclass 49) The door is rigid with the pocket.