FR1402296A - Improvements to telephone sets - Google Patents

Improvements to telephone sets

Info

Publication number
FR1402296A
FR1402296A FR981430A FR981430A FR1402296A FR 1402296 A FR1402296 A FR 1402296A FR 981430 A FR981430 A FR 981430A FR 981430 A FR981430 A FR 981430A FR 1402296 A FR1402296 A FR 1402296A
Authority
FR
France
Prior art keywords
telephone sets
telephone
sets
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
FR981430A
Other languages
French (fr)
Inventor
Hans Ulrich Knauer
Gerhard Schmidt
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR981430A priority Critical patent/FR1402296A/en
Application granted granted Critical
Publication of FR1402296A publication Critical patent/FR1402296A/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
    • H04M1/58—Anti-side-tone circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR981430A 1964-07-10 1964-07-10 Improvements to telephone sets Expired FR1402296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR981430A FR1402296A (en) 1964-07-10 1964-07-10 Improvements to telephone sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR981430A FR1402296A (en) 1964-07-10 1964-07-10 Improvements to telephone sets

Publications (1)

Publication Number Publication Date
FR1402296A true FR1402296A (en) 1965-06-11

Family

ID=8834384

Family Applications (1)

Application Number Title Priority Date Filing Date
FR981430A Expired FR1402296A (en) 1964-07-10 1964-07-10 Improvements to telephone sets

Country Status (1)

Country Link
FR (1) FR1402296A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235555A1 (en) * 1973-06-28 1975-01-24 Person Jean Michel Regulation of acoustic performance of telephones - employs a single varistor and provides level control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235555A1 (en) * 1973-06-28 1975-01-24 Person Jean Michel Regulation of acoustic performance of telephones - employs a single varistor and provides level control

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