US PATENT SUBCLASS 346 / 101
.~ Helical record-effecting element

Current as of: June, 1999
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346 /   HD   RECORDERS

78  DF  PRINTING, DOTTING, OR PUNCHING MARKER {9}
101.~ Helical record-effecting element

DEFINITION

Classification: 346/101

(under subclass 78) Recorders of the type wherein a record is effected by the application to the record receiver of a recording element in the form of a helix any point of which may operate upon the record receiver.