US PATENT SUBCLASS 160 / 317
.~.~.~ Plural

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}
317.~.~.~ Plural

DEFINITION

Classification: 160/317

(under subclass 313) Roll type devices in which there are a plurality of springs or spring sections for operating a single roll.

SEE OR SEARCH THIS CLASS, SUBCLASS:

316, for plural nested helical springs.