US PATENT SUBCLASS 400 / 273
.~.~ Operated by user's leg, (e.g., foot, knee, etc.)


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

251  DF  CASE-SHIFT MECHANISM {14}
272  DF  .~ Including key attachment for case-shift {1}
273.~.~ Operated by user's leg, (e.g., foot, knee, etc.)


DEFINITION

Classification: 400/273

Operated by user's leg, (e.g., foot, knee, etc.):

(under subclass 272) Subject matter wherein said device is energized by a lower limb of the typist.

(1) Note. A typewriter of this subclass is usually intended to increase typing speed by giving the typist the capability of actuating case-shift* by a key* element that is pressed by action of a foot, knee, etc., rather than pressed by a finger. A typewriter for handicapped persons is found in subclass 87 above.

SEE OR SEARCH THIS CLASS, SUBCLASS:

87, and see (1) Note above.