US PATENT SUBCLASS 160 / 306
.~.~.~ With means to prevent uncoiling of spring on removal from support

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

238  DF  ROLL TYPE {12}
291  DF  .~ With brake or stop {8}
305  DF  .~.~ For spring operated roller {1}
306.~.~.~ With means to prevent uncoiling of spring on removal from support

DEFINITION

Classification: 160/306

(under subclass 305) Roll type devices in which means are provided to prevent motion of the spring operated roller driving spindle when the roller is removed from its mounting means.