US PATENT SUBCLASS 400 / 637.4
.~.~.~.~.~ Including plural parallel carrier pivots

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

578  DF  SHEET OR WEB (E.G., RECORD-MEDIUM FEEDING MECHANISM) {13}
634  DF  .~ Including friction-feed means (e.g., band) {2}
636  DF  .~.~ By roller couple (e.g., rotatable pinch rollers, etc.) {8}
637  DF  .~.~.~ Including lower feed-roller(s) (e.g., pressure roller, etc.) {4}
637.3  DF  .~.~.~.~ Mounted on plural roller carriers {2}
637.4.~.~.~.~.~ Including plural parallel carrier pivots

DEFINITION

Classification: 400/637.4

Including plural parallel carrier pivots:

(under subclass 637.3) Subject matter wherein each of said members oscillates about a separate axis, and the axes of oscillation are parallel one to the other(s).