BE435751A - Improvements to mechanical exploration devices for sound recordings - Google Patents

Improvements to mechanical exploration devices for sound recordings

Info

Publication number
BE435751A
BE435751A BE435751A BE435751A BE435751A BE 435751 A BE435751 A BE 435751A BE 435751 A BE435751 A BE 435751A BE 435751 A BE435751 A BE 435751A BE 435751 A BE435751 A BE 435751A
Authority
BE
Belgium
Prior art keywords
sound recordings
exploration devices
mechanical
mechanical exploration
devices
Prior art date
Application number
BE435751A
Other languages
French (fr)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of BE435751A publication Critical patent/BE435751A/en

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
    • G11B3/02—Arrangements of heads
BE435751A 1938-08-02 1939-07-31 Improvements to mechanical exploration devices for sound recordings BE435751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE435751X 1938-08-02

Publications (1)

Publication Number Publication Date
BE435751A true BE435751A (en) 1939-08-31

Family

ID=40897467

Family Applications (1)

Application Number Title Priority Date Filing Date
BE435751A BE435751A (en) 1938-08-02 1939-07-31 Improvements to mechanical exploration devices for sound recordings

Country Status (1)

Country Link
BE (1) BE435751A (en)

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