FR954492A - - Google Patents

Info

Publication number
FR954492A
FR954492A FR954492DA FR954492A FR 954492 A FR954492 A FR 954492A FR 954492D A FR954492D A FR 954492DA FR 954492 A FR954492 A FR 954492A
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Publication date
Application granted granted Critical
Publication of FR954492A publication Critical patent/FR954492A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/02—Non-electrical signal transmission systems, e.g. optical systems using infrasonic, sonic or ultrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR954492D Expired FR954492A (US07867960-20110111-C00005.png)

Publications (1)

Publication Number Publication Date
FR954492A true FR954492A (US07867960-20110111-C00005.png) 1950-01-03

Family

ID=1557390

Family Applications (1)

Application Number Title Priority Date Filing Date
FR954492D Expired FR954492A (US07867960-20110111-C00005.png)

Country Status (1)

Country Link
FR (1) FR954492A (US07867960-20110111-C00005.png)

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