FR791420A - Improvements to sound recording and reproducing devices - Google Patents

Improvements to sound recording and reproducing devices

Info

Publication number
FR791420A
FR791420A FR791420DA FR791420A FR 791420 A FR791420 A FR 791420A FR 791420D A FR791420D A FR 791420DA FR 791420 A FR791420 A FR 791420A
Authority
FR
France
Prior art keywords
sound recording
reproducing devices
reproducing
devices
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 by Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR791420A publication Critical patent/FR791420A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
FR791420D 1934-06-20 1935-06-18 Improvements to sound recording and reproducing devices Expired FR791420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US791420XA 1934-06-20 1934-06-20

Publications (1)

Publication Number Publication Date
FR791420A true FR791420A (en) 1935-12-11

Family

ID=1552732

Family Applications (1)

Application Number Title Priority Date Filing Date
FR791420D Expired FR791420A (en) 1934-06-20 1935-06-18 Improvements to sound recording and reproducing devices

Country Status (1)

Country Link
FR (1) FR791420A (en)

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