FR444993A - Telephone receiver - Google Patents

Telephone receiver

Info

Publication number
FR444993A
FR444993A FR444993DA FR444993A FR 444993 A FR444993 A FR 444993A FR 444993D A FR444993D A FR 444993DA FR 444993 A FR444993 A FR 444993A
Authority
FR
France
Prior art keywords
telephone receiver
telephone
receiver
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
Andrew Plecher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR444993A publication Critical patent/FR444993A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR444993D 1912-06-04 1912-06-04 Telephone receiver Expired FR444993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR444993T 1912-06-04

Publications (1)

Publication Number Publication Date
FR444993A true FR444993A (en) 1912-10-30

Family

ID=1485925

Family Applications (1)

Application Number Title Priority Date Filing Date
FR444993D Expired FR444993A (en) 1912-06-04 1912-06-04 Telephone receiver

Country Status (1)

Country Link
FR (1) FR444993A (en)

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