US PATENT SUBCLASS 297 / 284.4
.~ Providing support for lower back (i.e., lumbar) region

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

284.1  DF  BOTTOM OR BACK WITH MEANS TO ALTER CONTOUR {5}
284.4.~ Providing support for lower back (i.e., lumbar) region {4}
284.5  DF  .~.~> Portable with seat attacher
284.6  DF  .~.~> Having a fluent material within flexible container
284.7  DF  .~.~> Rectilinear vertical adjustment
284.8  DF  .~.~> Rectilinear horizontal adjustment

DEFINITION

Classification: 297/284.4

Providing support for lower back (i.e., lumbar) region:

(under subclass 284.1) Device wherein the adjustable contour is provided in the area adapted to contact the lower back region of a seated occupant.