FR329950A - Microphone system - Google Patents

Microphone system

Info

Publication number
FR329950A
FR329950A FR329950DA FR329950A FR 329950 A FR329950 A FR 329950A FR 329950D A FR329950D A FR 329950DA FR 329950 A FR329950 A FR 329950A
Authority
FR
France
Prior art keywords
microphone system
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
French (fr)
Inventor
Joseph-Andre Tonnart
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.)
JOSEPH ANDRE TONNART
Original Assignee
JOSEPH ANDRE TONNART
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 JOSEPH ANDRE TONNART filed Critical JOSEPH ANDRE TONNART
Application granted granted Critical
Publication of FR329950A publication Critical patent/FR329950A/en
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)
FR329950D 1903-03-04 1903-03-04 Microphone system Expired FR329950A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR329950T 1903-03-04

Publications (1)

Publication Number Publication Date
FR329950A true FR329950A (en) 1903-08-08

Family

ID=1379763

Family Applications (1)

Application Number Title Priority Date Filing Date
FR329950D Expired FR329950A (en) 1903-03-04 1903-03-04 Microphone system

Country Status (1)

Country Link
FR (1) FR329950A (en)

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