US PATENT SUBCLASS 267 / 144
.~ Zigzag

Current as of: June, 1999
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267 /   HD   SPRING DEVICES

142  DF  CUSHION FOR HUMAN COMFORT {4}
144.~ Zigzag

DEFINITION

Classification: 267/144

(under subclass 142) Spring device in which the spring element is unitary and undulating in shape.

SEE OR SEARCH THIS CLASS, SUBCLASS:

165, for a zigzag spring device of general utility.