US PATENT SUBCLASS 400 / 547
.~.~ Including stop structure (e.g, traveling stop, etc.)

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

545  DF  FOR LINE-SPACING BY INCREMENTAL ROTATION OF PLATEN {15}
546  DF  .~ To facilitate condensed billing (i.e., by determining a desired limit or amount of retrograde or advance platen movement) {2}
547.~.~ Including stop structure (e.g, traveling stop, etc.) {1}
547.1  DF  .~.~.~> For arresting platen at limit of both retrograde and advance movement {2}

DEFINITION

Classification: 400/547

Including stop structure (e.g., traveling stop, etc.):

(under subclass 546) Subject matter wherein the incremental rotation of the platen* is regulated by the contact of one movable abutment with another stationary abutment, one of said abutments being on or connected to the platen and the other of said abutments being on or connected to the typewriter frame, whereby the platen rotation is positively halted by such contact.