FR669443A - Support for sound inscriptions - Google Patents

Support for sound inscriptions

Info

Publication number
FR669443A
FR669443A FR669443DA FR669443A FR 669443 A FR669443 A FR 669443A FR 669443D A FR669443D A FR 669443DA FR 669443 A FR669443 A FR 669443A
Authority
FR
France
Prior art keywords
inscriptions
sound
support
sound inscriptions
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
Fritz Pfleumer
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 FR669443A publication Critical patent/FR669443A/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
    • G11B5/70615—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Fe metal or alloys

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
FR669443D 1928-01-30 1929-01-30 Support for sound inscriptions Expired FR669443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE669443X 1928-01-30

Publications (1)

Publication Number Publication Date
FR669443A true FR669443A (en) 1929-11-15

Family

ID=6590183

Family Applications (1)

Application Number Title Priority Date Filing Date
FR669443D Expired FR669443A (en) 1928-01-30 1929-01-30 Support for sound inscriptions

Country Status (1)

Country Link
FR (1) FR669443A (en)

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