US PATENT SUBCLASS 400 / 712
.~.~ Including means producing an audible sound (e.g., plural tones, etc.)

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

679  DF  MEANS AUXILIARY TO TYPEWRITING FUNCTION {12}
703  DF  .~ Indicator means {7}
712.~.~ Including means producing an audible sound (e.g., plural tones, etc.)

DEFINITION

Classification: 400/712

Including means producing an audible sound (e.g., plural tones, etc.):

(under subclass 703) Subject matter wherein a typewriter is provided with means for emitting a noise that can be heard by a typist when a condition of the typewriter has been reached.

(1) Note. The noise may be emitted in two or more frequencies of sound.