FR1018464A - Improvements to telephone installations - Google Patents

Improvements to telephone installations

Info

Publication number
FR1018464A
FR1018464A FR1018464DA FR1018464A FR 1018464 A FR1018464 A FR 1018464A FR 1018464D A FR1018464D A FR 1018464DA FR 1018464 A FR1018464 A FR 1018464A
Authority
FR
France
Prior art keywords
telephone installations
installations
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
French (fr)
Inventor
Louis-Marie Sortais
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.)
Association des Ouvriers en Instruments de Precision
Original Assignee
Association des Ouvriers en Instruments de Precision
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 Association des Ouvriers en Instruments de Precision filed Critical Association des Ouvriers en Instruments de Precision
Application granted granted Critical
Publication of FR1018464A publication Critical patent/FR1018464A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR1018464D 1950-05-06 1950-05-06 Improvements to telephone installations Expired FR1018464A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1018464T 1950-05-06

Publications (1)

Publication Number Publication Date
FR1018464A true FR1018464A (en) 1953-01-08

Family

ID=9575050

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1018464D Expired FR1018464A (en) 1950-05-06 1950-05-06 Improvements to telephone installations

Country Status (1)

Country Link
FR (1) FR1018464A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006014B (en) * 1954-03-24 1957-04-11 Allg Telefon Fabrik G M B H Circuit arrangement for telephone systems whose subscriber lines can be connected either to a series system or to a line dialer system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006014B (en) * 1954-03-24 1957-04-11 Allg Telefon Fabrik G M B H Circuit arrangement for telephone systems whose subscriber lines can be connected either to a series system or to a line dialer system

Similar Documents

Publication Publication Date Title
FR1046700A (en) Telephone editing
FR1028681A (en) Improvements to hydroelectric installations
FR1018464A (en) Improvements to telephone installations
FR1027229A (en) Improvements to constructions
FR1025383A (en) Improvements to semi-circular keys
FR1045440A (en) Improvements to cranes
FR1029889A (en) Improvements to radio installations
FR1031047A (en) Telephone installation
FR1010952A (en) Improvements to telephone installations
FR1042806A (en) Improvements to electronic recorder-translators
FR1028265A (en) Improvements to self-generating telephone handsets
FR1073530A (en) Improvements to telephone installations
FR1068611A (en) Improvements to telephone devices
FR1008389A (en) Improvements made to radio-compasses
FR1041162A (en) Improvements to telephone sets
FR60694E (en) Improvements to storm lanterns
FR1021685A (en) Improvements to telephone handsets
FR60887E (en) Improvements to push-ups
FR1025939A (en) Improvements to telephone systems
FR1028047A (en) Improvements to compressor installations
FR1019560A (en) Improvements to fireplaces
FR1008250A (en) Towel-saddlebag improvements
FR1018482A (en) Improvements to electrical pipelines
FR939754A (en) Improvements to telephone installations
FR1048684A (en) Improvements to jealousies