US PATENT SUBCLASS 267 / 272
.~ Flat spiral
Current as of: June, 1999
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DEFINITION
Classification:        267/272  
Flat spiral:  
(under subclass 2) Spring device which includes a  coil-spring* element, all turns of which lie in the same  
plane.  
SEE OR SEARCH THIS CLASS, SUBCLASS: 
199, for a vehicle suspension employing a flat spiral spring  to both resiliently cushion and dampen motion between the  vehicle parts.