FR697819A - Improvements to sound recording and reproduction systems - Google Patents

Improvements to sound recording and reproduction systems

Info

Publication number
FR697819A
FR697819A FR697819DA FR697819A FR 697819 A FR697819 A FR 697819A FR 697819D A FR697819D A FR 697819DA FR 697819 A FR697819 A FR 697819A
Authority
FR
France
Prior art keywords
sound recording
reproduction systems
reproduction
systems
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
Edward Dana Phinney
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 FR697819A publication Critical patent/FR697819A/en
Expired legal-status Critical Current

Links

FR697819D 1930-06-23 1930-06-23 Improvements to sound recording and reproduction systems Expired FR697819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR697819T 1930-06-23

Publications (1)

Publication Number Publication Date
FR697819A true FR697819A (en) 1931-01-22

Family

ID=9047328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR697819D Expired FR697819A (en) 1930-06-23 1930-06-23 Improvements to sound recording and reproduction systems

Country Status (1)

Country Link
FR (1) FR697819A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095534B (en) * 1953-07-20 1960-12-22 Hugo Ritterbach Method for recording sound, in particular music performances for the purpose of electrical transmission to sound reproducers, sound preserves, radio and television stations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095534B (en) * 1953-07-20 1960-12-22 Hugo Ritterbach Method for recording sound, in particular music performances for the purpose of electrical transmission to sound reproducers, sound preserves, radio and television stations

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