[go: up one dir, main page]

FR930824A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
FR930824A
FR930824A FR930824DA FR930824A FR 930824 A FR930824 A FR 930824A FR 930824D A FR930824D A FR 930824DA FR 930824 A FR930824 A FR 930824A
Authority
FR
France
Prior art keywords
telephone systems
telephone
systems
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
Eigil Cohrt
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
Application granted granted Critical
Publication of FR930824A publication Critical patent/FR930824A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR930824D 1946-07-19 1946-07-19 Telephone systems Expired FR930824A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR930824T 1946-07-19

Publications (1)

Publication Number Publication Date
FR930824A true FR930824A (en) 1948-02-05

Family

ID=9448938

Family Applications (1)

Application Number Title Priority Date Filing Date
FR930824D Expired FR930824A (en) 1946-07-19 1946-07-19 Telephone systems

Country Status (1)

Country Link
FR (1) FR930824A (en)

Similar Documents

Publication Publication Date Title
FR929389A (en) Modulation systems
FR941062A (en) Communication systems
FR944379A (en) Improvements to telecommunications systems
FR932339A (en) Stylograph refinements
CH276281A (en) Telecommunication system.
FR940683A (en) Telephone systems
FR947901A (en) Automatic or similar telephone systems
FR953245A (en) Improvements to electroacoustic systems
FR928167A (en) Improvements to telephone systems
FR930824A (en) Telephone systems
FR933602A (en) Improvements to telephone systems
FR943692A (en) Telecommunications systems
BE482469R (en) Radiotelephone systems
FR939062A (en) Rectifier systems
FR926570A (en) Powerline telephone systems
FR928545A (en) Modulation systems
FR936778A (en) Aerial systems
FR932546A (en) Improvements to telephone systems
FR928329A (en) Improvements to telephone systems
FR66301E (en) Telephone switching systems
CH256757A (en) Plane.
FR929422A (en) Amplifier systems
FR953159A (en) Electrical communication systems
FR939029A (en) Regulatory systems
FR952852A (en) Improvements to telecommunication systems