US PATENT SUBCLASS 160 / 305
.~.~ For spring operated roller
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
.~.~ For spring operated roller {1}
306
DF
.~.~.~
> With means to prevent uncoiling of spring on removal from support
DEFINITION
Classification: 160/305
(under subclass 291) Roll type devices in which there is a spring operated roller.