FR749289A - Improvement in dictation machines - Google Patents

Improvement in dictation machines

Info

Publication number
FR749289A
FR749289A FR749289DA FR749289A FR 749289 A FR749289 A FR 749289A FR 749289D A FR749289D A FR 749289DA FR 749289 A FR749289 A FR 749289A
Authority
FR
France
Prior art keywords
improvement
dictation machines
dictation
machines
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
Louis Battistelli
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 FR749289A publication Critical patent/FR749289A/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
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR749289D 1932-04-14 1932-04-14 Improvement in dictation machines Expired FR749289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR749289T 1932-04-14

Publications (1)

Publication Number Publication Date
FR749289A true FR749289A (en) 1933-07-21

Family

ID=9148978

Family Applications (1)

Application Number Title Priority Date Filing Date
FR749289D Expired FR749289A (en) 1932-04-14 1932-04-14 Improvement in dictation machines

Country Status (1)

Country Link
FR (1) FR749289A (en)

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