US PATENT SUBCLASS 400 / 648
PLATEN OR PLATEN-MOVING MECHANISM

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

648PLATEN OR PLATEN-MOVING MECHANISM {5}
649  DF  .~> For movement of platen other than for line-spacing {4}
654  DF  .~> Character-size platen (e.g., anvil, disc, etc.) {1}
656  DF  .~> Bar (i.e., line size) platen {1}
658  DF  .~> Semicylindrical platen
659  DF  .~> Cylindrical platen {3}

DEFINITION

Classification: 400/648

PLATEN OR PLATEN-MOVING MECHANISM:

(under the class definition) Subject matter wherein significance is attributed to the platen* of a typewriter or to means for moving the platen.

(1) Note. The platen moving mechanism or the patents for this portion of the schedule is that platen movement which is not caused by carriage* feed or carriage return and similar carriage movements, or which is not caused by case-shift*, or which is not caused by line-space* mechanism. For such movements, other portions of this schedule are more properly appropriate.

(2) Note. A flat platen of a typewriter is provided for in subclasses 23+ of this schedule. This subclass (648) and the subclasses indented hereunder provided for a cylindrical platen or a platen having a configuration other than significantly flat.

SEE OR SEARCH THIS CLASS, SUBCLASS:

23+, and see (2) Note above.