US PATENT SUBCLASS 220 / 566
.~ Toroidal (i.e., doughnut shaped)

Current as of: June, 1999
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220 /   HD   RECEPTACLES

565  DF  STATIONARY TANK {5}
566.~ Toroidal (i.e., doughnut shaped)

DEFINITION

Classification: 220/566

Toroidal (i.e., doughnut shaped):

(under subclass 565) Tank wherein the tank has the shape of a torus.