US PATENT SUBCLASS 221 / 109
.~.~.~.~ Progressive release of multiple gates for three or more sources or stacks

Current as of: June, 1999
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221 /   HD   ARTICLE DISPENSING

92  DF  PLURAL SOURCES, STACKS OR COMPARTMENTS {8}
103  DF  .~ Each entirely depleted in order {4}
107  DF  .~.~ Feeding from subsequent source or stack prevented by articles in discharge path {1}
108  DF  .~.~.~ By article presence or absence responsive means {1}
109.~.~.~.~ Progressive release of multiple gates for three or more sources or stacks

DEFINITION

Classification: 221/109

(under subclass 108) Devices in which the means preventing feeding are gate-like members individual to at least three sources which members operate in turn.