FR367953A - Télégraphie acoustique - Google Patents

Télégraphie acoustique

Info

Publication number
FR367953A
FR367953A FR367953DA FR367953A FR 367953 A FR367953 A FR 367953A FR 367953D A FR367953D A FR 367953DA FR 367953 A FR367953 A FR 367953A
Authority
FR
France
Prior art keywords
telegraphy
acoustic
acoustic telegraphy
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.)
NAUTISKA INSTR AB
Original Assignee
NAUTISKA INSTR AB
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 NAUTISKA INSTR AB filed Critical NAUTISKA INSTR AB
Application granted granted Critical
Publication of FR367953A publication Critical patent/FR367953A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F13/00—Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
FR367953D 1906-07-10 1906-07-10 Télégraphie acoustique Expired FR367953A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR367953T 1906-07-10

Publications (1)

Publication Number Publication Date
FR367953A true FR367953A (fr) 1906-11-14

Family

ID=1415050

Family Applications (1)

Application Number Title Priority Date Filing Date
FR367953D Expired FR367953A (fr) 1906-07-10 1906-07-10 Télégraphie acoustique

Country Status (1)

Country Link
FR (1) FR367953A (fr)

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