FR1099992A - Staff call device - Google Patents

Staff call device

Info

Publication number
FR1099992A
FR1099992A FR1099992DA FR1099992A FR 1099992 A FR1099992 A FR 1099992A FR 1099992D A FR1099992D A FR 1099992DA FR 1099992 A FR1099992 A FR 1099992A
Authority
FR
France
Prior art keywords
call device
staff call
staff
call
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
O Schumacher
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 Business Machines Corp
Original Assignee
International Business Machines 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 Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR1099992A publication Critical patent/FR1099992A/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
    • H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR1099992D 1953-02-07 1954-02-04 Staff call device Expired FR1099992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1099992X 1953-02-07

Publications (1)

Publication Number Publication Date
FR1099992A true FR1099992A (en) 1955-09-14

Family

ID=7722633

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1099992D Expired FR1099992A (en) 1953-02-07 1954-02-04 Staff call device

Country Status (1)

Country Link
FR (1) FR1099992A (en)

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