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FR534861A - Improvements to sound recording devices - Google Patents

Improvements to sound recording devices

Info

Publication number
FR534861A
FR534861A FR534861DA FR534861A FR 534861 A FR534861 A FR 534861A FR 534861D A FR534861D A FR 534861DA FR 534861 A FR534861 A FR 534861A
Authority
FR
France
Prior art keywords
recording devices
sound recording
sound
devices
recording
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
Adrian Francis Sykes
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 FR534861A publication Critical patent/FR534861A/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
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/04—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electric resistance; Record carriers therefor
FR534861D 1921-02-16 1921-02-16 Improvements to sound recording devices Expired FR534861A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR534861T 1921-02-16

Publications (1)

Publication Number Publication Date
FR534861A true FR534861A (en) 1922-04-04

Family

ID=8925791

Family Applications (1)

Application Number Title Priority Date Filing Date
FR534861D Expired FR534861A (en) 1921-02-16 1921-02-16 Improvements to sound recording devices

Country Status (1)

Country Link
FR (1) FR534861A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741332C (en) * 1931-09-30 1943-11-10 Philips Miller N V Device for cutting out an optically reproduced vibration recording from a carrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741332C (en) * 1931-09-30 1943-11-10 Philips Miller N V Device for cutting out an optically reproduced vibration recording from a carrier

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