FR938322A - Système téléphonique à amplification - Google Patents

Système téléphonique à amplification

Info

Publication number
FR938322A
FR938322A FR938322DA FR938322A FR 938322 A FR938322 A FR 938322A FR 938322D A FR938322D A FR 938322DA FR 938322 A FR938322 A FR 938322A
Authority
FR
France
Prior art keywords
telephone system
amplified telephone
amplified
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
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
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 Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of FR938322A publication Critical patent/FR938322A/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
    • H04M1/58—Anti-side-tone circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR938322D 1943-05-21 1946-08-19 Système téléphonique à amplification Expired FR938322A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US938322XA 1943-05-21 1943-05-21

Publications (1)

Publication Number Publication Date
FR938322A true FR938322A (fr) 1948-09-10

Family

ID=22241045

Family Applications (1)

Application Number Title Priority Date Filing Date
FR938322D Expired FR938322A (fr) 1943-05-21 1946-08-19 Système téléphonique à amplification

Country Status (1)

Country Link
FR (1) FR938322A (fr)

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