FR708668A - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR708668A
FR708668A FR708668DA FR708668A FR 708668 A FR708668 A FR 708668A FR 708668D A FR708668D A FR 708668DA FR 708668 A FR708668 A FR 708668A
Authority
FR
France
Prior art keywords
telephone systems
automatic telephone
automatic
systems
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)
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.)
Compagnie des Telephones Thomson Houston
Original Assignee
Compagnie des Telephones Thomson Houston
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 Compagnie des Telephones Thomson Houston filed Critical Compagnie des Telephones Thomson Houston
Application granted granted Critical
Publication of FR708668A publication Critical patent/FR708668A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR708668D 1931-07-31 1930-04-03 Improvements to automatic telephone systems Expired FR708668A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR40633T 1931-07-31

Publications (1)

Publication Number Publication Date
FR708668A true FR708668A (en) 1931-07-27

Family

ID=8676899

Family Applications (2)

Application Number Title Priority Date Filing Date
FR708668D Expired FR708668A (en) 1931-07-31 1930-04-03 Improvements to automatic telephone systems
FR40633D Expired FR40633E (en) 1931-07-31 1931-07-31 Improvements to automatic telephone systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR40633D Expired FR40633E (en) 1931-07-31 1931-07-31 Improvements to automatic telephone systems

Country Status (1)

Country Link
FR (2) FR708668A (en)

Also Published As

Publication number Publication date
FR40633E (en) 1932-07-27

Similar Documents

Publication Publication Date Title
FR721123A (en) Improvements to telephone systems
FR714881A (en) Improvements to television systems
FR707755A (en) Improvements to automatic telephone systems
FR707756A (en) Improvements to automatic telephone systems
FR708703A (en) Improvements to automatic telephone systems
FR708668A (en) Improvements to automatic telephone systems
FR683358A (en) Improvements to automatic telephone systems
FR716329A (en) Improvements to automatic telephone systems
FR720315A (en) Improvements to automatic telephone systems
FR721579A (en) Improvements to automatic telephone systems
FR693979A (en) Improvements to automatic telephone systems
FR688272A (en) Improvements to automatic lubrication systems
FR620351A (en) Improvements to automatic telephone systems
FR712321A (en) Improvements to telephone systems
FR728626A (en) Improvements to telephone systems
FR669009A (en) Improvements to automatic telephone systems
FR667328A (en) Improvements to automatic telephone systems
FR725229A (en) Improvements to telephone systems
FR723779A (en) Improvements to transmission systems
FR655645A (en) Improvements to automatic telephone systems
FR671532A (en) Improvements to automatic telephone systems
FR726997A (en) Improvements to telegraph systems
FR758310A (en) Improvements to automatic telephone systems
FR753279A (en) Improvements to automatic telephone systems
FR726757A (en) Improvements to telephone systems