US PATENT SUBCLASS 414 / 720
.~.~.~ Spring

Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

680  DF  VERTICALLY SWINGING LOAD SUPPORT {9}
685  DF  .~ Shovel or fork type {8}
719  DF  .~.~ Return, buffer, or counterweight feature {1}
720.~.~.~ Spring

DEFINITION

Classification: 414/720

Spring:

(under subclass 719) Apparatus having a resilient means which returns the vertically swinging member to its normal position.