US PATENT SUBCLASS 346 / 74.4
.~ Radiation sensitive

Current as of: June, 1999
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346 /   HD   RECORDERS

74.2  DF  MAGNETOGRAPHIC {5}
74.4.~ Radiation sensitive

DEFINITION

Classification: 346/74.4

Radiation sensitive:

(under subclass 74.2) Subject matter wherein light or other radiation, including heat, forms the image by magnetizing or demagnetizing a surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

76.1, for thermal recording apparatus or method for recording phenomenon.

SEE OR SEARCH CLASS

219, Electric Heating, appropriate subclass for thermal recording heating elements.

359, Optics: Systems (Including Communication) and Elements,

290+, for light-controlled surface or interface. 360, Dynamic Magnetic Information Storage or Retrieval,

59, for thermomagnetic recorders and recording of nondirectly visible image.