US PATENT SUBCLASS 160 / 313
.~.~ Spring

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


160 /   HD   FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL

238  DF  ROLL TYPE {12}
309  DF  .~ With rotating means {5}
313.~.~ Spring {5}
314  DF  .~.~.~> External of roll
315  DF  .~.~.~> With winding or tensioning means
316  DF  .~.~.~> Nested helical springs
317  DF  .~.~.~> Plural
318  DF  .~.~.~> With spring anchor

DEFINITION

Classification: 160/313

(under subclass 309) Roll type devices in which the roll is caused to rotate by spring means.