US PATENT SUBCLASS 400 / 639
.~.~.~ Including upper feed-roller(s) (e.g, pressure roller, etc.)

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}
639.~.~.~ Including upper feed-roller(s) (e.g, pressure roller, etc.) {1}
639.1  DF  .~.~.~.~> Mounted on "paper bail" {1}

DEFINITION

Classification: 400/639

Including upper feed-roller(s) (e.g., pressure roller, etc.):

(under subclass 636) Subject matter wherein significance is attributed to one or more feed-rollers* that are located relative to the associated platen* adjacent to the topmost surface of the platen.