US PATENT SUBCLASS 400 / 181
.~.~ By pneumatic actuation of type-face or type-bar

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

176  DF  HAVING FLUID-PRESSURE POWER DRIVE {4}
179  DF  .~ For type-face selection or choice {2}
181.~.~ By pneumatic actuation of type-face or type-bar

DEFINITION

Classification: 400/181

By pneumatic actuation of type-face or type-bar:

(under subclass 179) Subject matter wherein the energy of said fluid is used to cause a selected or chosen type-face* element or a type-bar* carrying such element to be impressed against the record-medium* to imprint a character* symbol thereon.