FR2139781A1 - - Google Patents

Info

Publication number
FR2139781A1
FR2139781A1 FR7120997A FR7120997A FR2139781A1 FR 2139781 A1 FR2139781 A1 FR 2139781A1 FR 7120997 A FR7120997 A FR 7120997A FR 7120997 A FR7120997 A FR 7120997A FR 2139781 A1 FR2139781 A1 FR 2139781A1
Authority
FR
France
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.)
Granted
Application number
FR7120997A
Other languages
French (fr)
Other versions
FR2139781B1 (ro
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.)
INSTALLATIONS TELEPH NLE
Original Assignee
INSTALLATIONS TELEPH NLE
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 INSTALLATIONS TELEPH NLE filed Critical INSTALLATIONS TELEPH NLE
Priority to FR7120997A priority Critical patent/FR2139781B1/fr
Publication of FR2139781A1 publication Critical patent/FR2139781A1/fr
Application granted granted Critical
Publication of FR2139781B1 publication Critical patent/FR2139781B1/fr
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
    • H04M3/432—Arrangements for calling a subscriber at a specific time, e.g. morning call service
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
    • G04C21/32—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR7120997A 1971-06-02 1971-06-02 Expired FR2139781B1 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7120997A FR2139781B1 (ro) 1971-06-02 1971-06-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7120997A FR2139781B1 (ro) 1971-06-02 1971-06-02

Publications (2)

Publication Number Publication Date
FR2139781A1 true FR2139781A1 (ro) 1973-01-12
FR2139781B1 FR2139781B1 (ro) 1974-03-22

Family

ID=9078387

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7120997A Expired FR2139781B1 (ro) 1971-06-02 1971-06-02

Country Status (1)

Country Link
FR (1) FR2139781B1 (ro)

Also Published As

Publication number Publication date
FR2139781B1 (ro) 1974-03-22

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Legal Events

Date Code Title Description
ST Notification of lapse