US PATENT SUBCLASS 235 / 83
.~.~ Disk; dial and hand

Current as of: June, 1999
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235 /   HD   REGISTERS

61 R  DF  CALCULATORS {52}
77  DF  .~ Single axis {3}
83.~.~ Disk; dial and hand {1}
84  DF  .~.~.~> Slide rules

DEFINITION

Classification: 235/83

(under subclass 77) Calculators, whose registering devices comprise a rotatable disk mounted on a base, or one or more hands or pointers movable over the face of a dial properly graduated.