US PATENT SUBCLASS 178 / 31
.~.~ Multiple-line circuit

Current as of: June, 1999
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178 /   HD   TELEGRAPHY

2 R  DF  SYSTEMS {21}
23 R  DF  .~ Printing {8}
31.~.~ Multiple-line circuit {1}
32  DF  .~.~.~> With type-wheel recorder

DEFINITION

Classification: 178/31

(under subclass 23) Telegraphy printing systems having a plurality of main connecting lines, but less in number than the number of transmitting keys of letters used. Excludes page or column printers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

24, for bulletin printing devices.

27, for printing page selectors.

28+, for wheel type recorder page printing systems.

SEE OR SEARCH CLASS

400, Typewriting Machines, 70+, for typewriters connected by the same number of lines as there are keys when the object is electrical actuation.