US PATENT SUBCLASS 297 / 440.2
.~ Interfitted back and back frame

Current as of: June, 1999
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297 /   HD   CHAIRS AND SEATS

440.1  DF  HAVING DETACHABLY INTERFITTING PARTS OR COMPONENTS; I.E., KNOCKDOWN {9}
440.2.~ Interfitted back and back frame {1}
440.21  DF  .~.~> Including a substantially upright post slidably inserted into an elongated recess

DEFINITION

Classification: 297/440.2

Interfitted back and back frame:

(under subclass 440.1) Device including a back and a frame on which the back is mounted, wherein the back includes structure configured to detachably closely join with a connection means of the back frame.