US PATENT SUBCLASS 235 / 66
.~ Cylinder and disk

Current as of: June, 1999
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235 /   HD   REGISTERS

61 R  DF  CALCULATORS {52}
66.~ Cylinder and disk

DEFINITION

Classification: 235/66

(under subclass 61) Subject matter comprising adding-machines having two parts, a cylinder and a disk, or a plurality of either.