US PATENT SUBCLASS 235 / 59 BF
.~.~.~ Attachment for typewriters


Current as of: June, 1999
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235 /   HD   REGISTERS

61 R  DF  CALCULATORS {52}
58 R  DF  .~ Recording {7}
59 R  DF  .~.~ Key operated {10}
59 BF.~.~.~ Attachment for typewriters

Unofficial Alpha Subclasses: R A BC BD BE BF CP BG TP T BH

DEFINITION

Classification: 235/59

(under subclass 58) Recording calculating-machines, where the actuation of the key directly operates the registering and recording devices.