FR357990A - Transmetteur téléphonique - Google Patents

Transmetteur téléphonique

Info

Publication number
FR357990A
FR357990A FR357990A FR357990DA FR357990A FR 357990 A FR357990 A FR 357990A FR 357990 A FR357990 A FR 357990A FR 357990D A FR357990D A FR 357990DA FR 357990 A FR357990 A FR 357990A
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
FR357990A
Other languages
English (en)
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.)
TELAUPAD SYNDICATE Ltd
Original Assignee
TELAUPAD SYNDICATE Ltd
Filing date
Publication date
Application filed by TELAUPAD SYNDICATE Ltd filed Critical TELAUPAD SYNDICATE Ltd
Application granted granted Critical
Publication of FR357990A publication Critical patent/FR357990A/fr
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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR357990A 1905-09-23 Transmetteur téléphonique Expired FR357990A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE174988T

Publications (1)

Publication Number Publication Date
FR357990A true FR357990A (fr) 1906-01-22

Family

ID=5691614

Family Applications (1)

Application Number Title Priority Date Filing Date
FR357990A Expired FR357990A (fr) 1905-09-23 Transmetteur téléphonique

Country Status (2)

Country Link
DE (1) DE174988C (fr)
FR (1) FR357990A (fr)

Also Published As

Publication number Publication date
DE174988C (fr)

Similar Documents

Publication Publication Date Title
FR351898A (fr) Transmetteur téléphonique
FR359517A (fr) Transmetteur téléphonique
FR357990A (fr) Transmetteur téléphonique
FR340435A (fr) Transmetteur téléphonique
FR4091E (fr) Récepteur téléphonique
FR364901A (fr) Transmetteur téléphonique
FR377966A (fr) Transmetteur téléphonique
AT25579B (de) Telephon-Sprechmuschel.
CH33385A (de) Glockenläutwerk
FR342950A (fr) Transmetteur téléphonique
CH34631A (de) Sprechuhr
DK8078C (da) Mikrotelefon.
DK8079C (da) Mikrotelefon.
AT23775B (de) Sprechapparat.
FR377472A (fr) Transmetteur téléphonique
FR351867A (fr) Microtéléphone
FR4645E (fr) Microtéléphone
CH33518A (fr) Microphone
CH32741A (de) Mikrophon
AU263005B (en) Telephone transmitters
FR355061A (fr) Perfectionnements apportés aux transmetteurs téléphoniques
DK7437C (da) Si.
FR360640A (fr) Interrupteur-voltmètre
FR360516A (fr) Block-système
FR357823A (fr) Aumonière