US PATENT SUBCLASS 160 / 318
.~.~.~ With spring anchor
Current as of:
June, 1999
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160 /
HD
FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL
238
DF
ROLL TYPE
{12}
309
DF
.~ With rotating means {5}
313
DF
.~.~ Spring {5}
318
.~.~.~ With spring anchor
DEFINITION
Classification: 160/318
(under subclass 313) Roll type devices in which the means for connecting an end of the roll actuating spring to its associated element is claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315, for this feature in spring winding or tensioning means.