FR523793A - Telephone transmitter - Google Patents

Telephone transmitter

Info

Publication number
FR523793A
FR523793A FR523793A FR523793DA FR523793A FR 523793 A FR523793 A FR 523793A FR 523793 A FR523793 A FR 523793A FR 523793D A FR523793D A FR 523793DA FR 523793 A FR523793 A FR 523793A
Authority
FR
France
Prior art keywords
telephone transmitter
telephone
transmitter
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
FR523793A
Other languages
French (fr)
Inventor
Charles Bouvet
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.)
CHARLES BOUVET
Original Assignee
CHARLES BOUVET
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 CHARLES BOUVET filed Critical CHARLES BOUVET
Application granted granted Critical
Publication of FR523793A publication Critical patent/FR523793A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
FR523793A 1917-08-03 1915-10-04 Telephone transmitter Expired FR523793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR23320T 1917-08-03

Publications (1)

Publication Number Publication Date
FR523793A true FR523793A (en) 1921-08-25

Family

ID=8662074

Family Applications (2)

Application Number Title Priority Date Filing Date
FR523793A Expired FR523793A (en) 1917-08-03 1915-10-04 Telephone transmitter
FR23320A Expired FR23320E (en) 1917-08-03 1917-08-03 Telephone transmitter

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR23320A Expired FR23320E (en) 1917-08-03 1917-08-03 Telephone transmitter

Country Status (1)

Country Link
FR (2) FR523793A (en)

Also Published As

Publication number Publication date
FR23320E (en) 1921-11-02

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