US PATENT SUBCLASS 360 / 74.6
.~.~.~.~ Photoelectric

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

Internet Version by PATENTEC © 1999      Terms of Use


360 /   HD   DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL

69  DF  AUTOMATIC CONTROL OF A RECORDER MECHANISM {3}
71  DF  .~ Controlling the record {3}
74.1  DF  .~.~ Stopping or reversing {4}
74.5  DF  .~.~.~ Responsive to physical property of record {2}
74.6.~.~.~.~ Photoelectric

DEFINITION

Classification: 360/74.6

Photoelectric:

(under subclass 74.5) Subject matter where a portion of the record has a light transmitting or reflecting property that differs from the rest of the record and photoelectric means are used to detect such to control the stopping or reversing.