FR684058A - Microtéléphone - Google Patents

Microtéléphone

Info

Publication number
FR684058A
FR684058A FR684058DA FR684058A FR 684058 A FR684058 A FR 684058A FR 684058D A FR684058D A FR 684058DA FR 684058 A FR684058 A FR 684058A
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)
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR684058A publication Critical patent/FR684058A/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)
FR684058D 1929-01-19 1929-10-29 Microtéléphone Expired FR684058A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE684058X 1929-01-19

Publications (1)

Publication Number Publication Date
FR684058A true FR684058A (fr) 1930-06-20

Family

ID=6597517

Family Applications (1)

Application Number Title Priority Date Filing Date
FR684058D Expired FR684058A (fr) 1929-01-19 1929-10-29 Microtéléphone

Country Status (1)

Country Link
FR (1) FR684058A (fr)

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