US PATENT SUBCLASS 250 / 570
.~.~.~.~ Tape, drum, or disc types

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


250 /   HD   RADIANT ENERGY

200  DF  PHOTOCELLS; CIRCUITS AND APPARATUS {11}
216  DF  .~ Optical or pre-photocell system {11}
566  DF  .~.~ Including coded record {1}
568  DF  .~.~.~ Digital information {2}
570.~.~.~.~ Tape, drum, or disc types

DEFINITION

Classification: 250/570

(under subclass 568) Subject matter wherein the record is in the shape of a narrow strip of flexible material a cylinder, or a flat circular form.