US PATENT SUBCLASS 108 / 57.21
.~ Load-contacting surface having parallel support members in juxtaposed position

Current as of: June, 1999
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108 /   HD   HORIZONTALLY SUPPORTED PLANAR SURFACES

51.11  DF  INDUSTRIAL PLATFORM {20}
57.21.~ Load-contacting surface having parallel support members in juxtaposed position {3}
57.22  DF  .~.~> Tubular or channel-shaped support members
57.23  DF  .~.~> Including one-piece elongated channel bar engaging upper and lower surfaces of support members
57.24  DF  .~.~> Including elongated angle bar having horizontal flange engaging upper surface of support members

DEFINITION

Classification: 108/57.21

Load-contacting surface having parallel support members in juxtaposed position:

(under subclass 51.11) Device including plural load-contacting elements arranged side by side and parallel to one another.