FR528469A - Système téléphonique amplificateur de réception - Google Patents

Système téléphonique amplificateur de réception

Info

Publication number
FR528469A
FR528469A FR528469A FR528469DA FR528469A FR 528469 A FR528469 A FR 528469A FR 528469 A FR528469 A FR 528469A FR 528469D A FR528469D A FR 528469DA FR 528469 A FR528469 A FR 528469A
Authority
FR
France
Prior art keywords
telephone system
receiving amplifier
amplifier
receiving
telephone
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
FR528469A
Other languages
English (en)
Inventor
Jean Derabeye
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.)
JEAN DERABEYE
Original Assignee
JEAN DERABEYE
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 JEAN DERABEYE filed Critical JEAN DERABEYE
Application granted granted Critical
Publication of FR528469A publication Critical patent/FR528469A/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
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR528469A 1920-06-15 1920-06-15 Système téléphonique amplificateur de réception Expired FR528469A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR528469T 1920-06-15

Publications (1)

Publication Number Publication Date
FR528469A true FR528469A (fr) 1921-11-12

Family

ID=8922063

Family Applications (1)

Application Number Title Priority Date Filing Date
FR528469A Expired FR528469A (fr) 1920-06-15 1920-06-15 Système téléphonique amplificateur de réception

Country Status (1)

Country Link
FR (1) FR528469A (fr)

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