US PATENT SUBCLASS 267 / 74
.~.~ Single

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

Internet Version by PATENTEC © 1999      Terms of Use


267 /   HD   SPRING DEVICES

69  DF  ELASTIC EXTENSION DEVICES {2}
73  DF  .~ Tension spring {1}
74.~.~ Single

DEFINITION

Classification: 267/74

(under subclass 73) Structure wherein the extension device comprises one spring element only.