US PATENT SUBCLASS 235 / 82 TK
.~.~.~.~ Ten key

Current as of: June, 1999
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235 /   HD   REGISTERS

61 R  DF  CALCULATORS {52}
77  DF  .~ Single axis {3}
79  DF  .~.~ Cylinder {3}
82 R  DF  .~.~.~ Key operated {6}
82 TK.~.~.~.~ Ten key

Unofficial Alpha Subclasses: R C FK TK MK SK

DEFINITION

Classification: 235/82

(under subclass 79) Calculating-machines having registering devices composed of a series of cylinders placed side by side upon a common shaft and being directly operated by the depression of keys, with which the machine is provided.