US PATENT SUBCLASS 369 / 18
OPTICAL READING OF MECHANICAL RECORD
Current as of:
June, 1999
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369 /
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DYNAMIC INFORMATION STORAGE OR RETRIEVAL
18
OPTICAL READING OF MECHANICAL RECORD
DEFINITION
Classification: 369/18
OPTICAL READING OF MECHANICAL RECORD:
(under the class definition) Subject matter including retrieval by optical sensing of a mechanically recorded track.
(1) Note. Included herein are devices with photosensitive pickups for grooved records.
