FR2425183B1

Stereophonic coder employing a multilevel switching system for the generation of the stereophonic signal

Abstract

This record has no abstract on file.

Term

Term ended

Expired 19 January 1999, 27.7 years ago.

  1. Priority
  2. Filed
  3. Granted
  4. Expired
  5. Today

4 priority claims, no other members on record

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Priority claims4

Priority claims
DocumentOfficeKindDate
6803178ItalyA
6803178ItalyA
06803178–––
IT19780068031–––