US PATENT SUBCLASS 235 / 60.28
.~.~.~.~ With zero recording controls

Current as of: June, 1999
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235 /   HD   REGISTERS

61 R  DF  CALCULATORS {52}
58 R  DF  .~ Recording {7}
60 R  DF  .~.~ Key set {31}
60.27  DF  .~.~.~ Gang recording {3}
60.28.~.~.~.~ With zero recording controls

DEFINITION

Classification: 235/60.28

(under subclass 60.27) Subject matter comprising devices for controlling the recording of zeros in orders in which no

significant digit appears.

(1) Note. These devices are usually controlled by a higher order recording element which is positioned to record a significant digit, to cause zero recording by adjacent lower elements in which no such digit appears and to suppress zero recording from recording elements in orders above the order in which the highest significant digit appears.

(2) Note. This subclass receives manually settable devices in machines of the type provided for in subclass 60.27 for enabling or suppressing zero recording, whether in combination with the automatic devices mentioned in (1) Note or not.