US PATENT SUBCLASS 400 / 438.1
.~.~.~ Including an indicator

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

383  DF  TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER {19}
436  DF  .~ Type-bar return spring connected to type-bar-action linkage {4}
438  DF  .~.~ With adjustment means (e.g., for "touch" control, ect.) {1}
438.1.~.~.~ Including an indicator

DEFINITION

Classification: 400/438.1

Including an indicator:

(under subclass 438) Subject matter wherein the typewriter that is provided with said force-changing attribute is also provided with a device for showing the typist an indication of how much force is required to press the key* elements of the typewriter.