US PATENT SUBCLASS 235 / 88 R
.~.~ Disk

Current as of: June, 1999
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235 /   HD   REGISTERS

61 R  DF  CALCULATORS {52}
85 R  DF  .~ Tabular {5}
88 R.~.~ Disk {5}
88 F  DF  .~.~.~> Financial
88 G  DF  .~.~.~> Games
88 M  DF  .~.~.~> Mathematics
88 N  DF  .~.~.~> Navigation
88 RC  DF  .~.~.~> Rhythm calculators

Unofficial Alpha Subclasses: R F G M N RC

DEFINITION

Classification: 235/88

(under subclass 85) Tabular calculators having tables placed upon disks which rotate about their centers.