US PATENT SUBCLASS 235 / 77
.~ Single axis

Current as of: June, 1999
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235 /   HD   REGISTERS

61 R  DF  CALCULATORS {52}
77.~ Single axis {3}
78 R  DF  .~.~> Concentric disk {6}
79  DF  .~.~> Cylinder {3}
83  DF  .~.~> Disk; dial and hand {1}

DEFINITION

Classification: 235/77

(under subclass 61) Calculators, whose registering devices are placed upon the same axis.