US PATENT SUBCLASS 400 / 252
.~ Including programmed-control-system

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

251  DF  CASE-SHIFT MECHANISM {14}
252.~ Including programmed-control-system

DEFINITION

Classification: 400/252

Including programmed-control-system:

(under subclass 251) Subject matter wherein the operation of the case-shift* mechanism to effect the form of a type-face* that is to be impressed against the record-medium* is governed by a programmed-control-system*.