FR389490A - Microtéléphone - Google Patents

Microtéléphone

Info

Publication number
FR389490A
FR389490A FR389490DA FR389490A FR 389490 A FR389490 A FR 389490A FR 389490D A FR389490D A FR 389490DA FR 389490 A FR389490 A FR 389490A
Authority
FR
France
Prior art keywords
microphone
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
English (en)
Inventor
Antonin Davot
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.)
ANTONIN DAVOT
Original Assignee
ANTONIN DAVOT
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 ANTONIN DAVOT filed Critical ANTONIN DAVOT
Application granted granted Critical
Publication of FR389490A publication Critical patent/FR389490A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR389490D 1908-04-22 1908-04-22 Microtéléphone Expired FR389490A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR389490T 1908-04-22

Publications (1)

Publication Number Publication Date
FR389490A true FR389490A (fr) 1908-09-10

Family

ID=1435091

Family Applications (1)

Application Number Title Priority Date Filing Date
FR389490D Expired FR389490A (fr) 1908-04-22 1908-04-22 Microtéléphone

Country Status (1)

Country Link
FR (1) FR389490A (fr)

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