FR594528A - Telephone development - Google Patents

Telephone development

Info

Publication number
FR594528A
FR594528A FR594528DA FR594528A FR 594528 A FR594528 A FR 594528A FR 594528D A FR594528D A FR 594528DA FR 594528 A FR594528 A FR 594528A
Authority
FR
France
Prior art keywords
telephone development
telephone
development
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
Gabriel Pelletier
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 FR594528A publication Critical patent/FR594528A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR594528D 1924-05-15 1924-05-15 Telephone development Expired FR594528A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR594528T 1924-05-15

Publications (1)

Publication Number Publication Date
FR594528A true FR594528A (en) 1925-09-14

Family

ID=8966217

Family Applications (1)

Application Number Title Priority Date Filing Date
FR594528D Expired FR594528A (en) 1924-05-15 1924-05-15 Telephone development

Country Status (1)

Country Link
FR (1) FR594528A (en)

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