FR780265A - Improvements to sound recording and reproduction facilities - Google Patents

Improvements to sound recording and reproduction facilities

Info

Publication number
FR780265A
FR780265A FR780265DA FR780265A FR 780265 A FR780265 A FR 780265A FR 780265D A FR780265D A FR 780265DA FR 780265 A FR780265 A FR 780265A
Authority
FR
France
Prior art keywords
sound recording
reproduction facilities
reproduction
facilities
sound
Prior art date
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)
Inventor
Louis Paul Durand
Pier Carlo Ricchiardi
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR780265A publication Critical patent/FR780265A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
FR780265D 1934-01-09 1934-01-09 Improvements to sound recording and reproduction facilities Expired FR780265A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR780265T 1934-01-09

Publications (1)

Publication Number Publication Date
FR780265A true FR780265A (en) 1935-04-23

Family

ID=9204016

Family Applications (1)

Application Number Title Priority Date Filing Date
FR780265D Expired FR780265A (en) 1934-01-09 1934-01-09 Improvements to sound recording and reproduction facilities

Country Status (1)

Country Link
FR (1) FR780265A (en)

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