US PATENT SUBCLASS 16 / 24
.~ Ball

Current as of: June, 1999
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16 /   HD   MISCELLANEOUS HARDWARE

18 R  DF  CASTERS {20}
24.~ Ball {2}
25  DF  .~.~> Antifrictionally mounted {2}
28  DF  .~.~> Pivoted

DEFINITION

Classification: 16/24

(under subclass 18) Casters comprising balls.