FR339458A - Microtéléphone - Google Patents

Microtéléphone

Info

Publication number
FR339458A
FR339458A FR339458A FR339458DA FR339458A FR 339458 A FR339458 A FR 339458A FR 339458 A FR339458 A FR 339458A FR 339458D A FR339458D A FR 339458DA FR 339458 A FR339458 A FR 339458A
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
FR339458A
Other languages
English (en)
French (fr)
Inventor
Konrad Hoeflinger
Carl Wolffhardt Junior
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.)
CARL WOLFFHARDT JUNIOR
Original Assignee
CARL WOLFFHARDT JUNIOR
Filing date
Publication date
Application filed by CARL WOLFFHARDT JUNIOR filed Critical CARL WOLFFHARDT JUNIOR
Application granted granted Critical
Publication of FR339458A publication Critical patent/FR339458A/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)
  • Telephone Set Structure (AREA)
FR339458A 1904-01-09 Microtéléphone Expired FR339458A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE155898T

Publications (1)

Publication Number Publication Date
FR339458A true FR339458A (fr) 1904-06-10

Family

ID=5677429

Family Applications (1)

Application Number Title Priority Date Filing Date
FR339458A Expired FR339458A (fr) 1904-01-09 Microtéléphone

Country Status (2)

Country Link
DE (1) DE155898C (enrdf_load_stackoverflow)
FR (1) FR339458A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE155898C (enrdf_load_stackoverflow)

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