US PATENT SUBCLASS 160 / 137
.~.~ Plural differently movable parallelogram section with a common side

Current as of: June, 1999
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160 /   HD   FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL

130  DF  PLURAL STRIP, SLAT, OR PANEL TYPE {11}
136  DF  .~ Parallelogram type {6}
137.~.~ Plural differently movable parallelogram section with a common side

DEFINITION

Classification: 160/137

(under subclass 136) Devices wherein at least two sections of a parallelogram unit are pivotally interconnected through a common side, and which sections move differently when the device is operated. The different movements may take place concurrently and usually consist of pivotal movements in opposite directions.