US PATENT SUBCLASS 400 / 164.1
.~.~.~ Via pneumatic actuation

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

139  DF  INCLUDING TYPE-SET-ASSEMBLAGE MOUNTED ON CARRIER AND RELATIVELY MOVABLE FOR SELECTION AND FOR IMPACT OF TYPE-FACE {11}
160  DF  .~ Imprint by pivoting of type-head-carrier and type-head against record-medium {7}
162  DF  .~.~ Type-head movable for selection of type-face {14}
164.1.~.~.~ Via pneumatic actuation

DEFINITION

Classification: 400/164.1

Via pneumatic actuation:

(under subclass 162) Subject matter wherein said selecting mechanism is caused to operate by the energy that is transmitted and said mechanism by way of exertion of a force upon a gaseous material.