US PATENT SUBCLASS 232 / 37
.~.~ Door-operated

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

17  DF  LETTER BOXES {12}
*  DD  .~ Indicators {1}
37.~.~ Door-operated

DEFINITION

Classification: 232/37

Indicators moved intermittently by the action of the doors. They are usually for the purpose of showing the times of the next collections.