FR856396A - Automatic telephone system - Google Patents

Automatic telephone system

Info

Publication number
FR856396A
FR856396A FR856396DA FR856396A FR 856396 A FR856396 A FR 856396A FR 856396D A FR856396D A FR 856396DA FR 856396 A FR856396 A FR 856396A
Authority
FR
France
Prior art keywords
telephone system
automatic telephone
automatic
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR856396A publication Critical patent/FR856396A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
FR856396D 1938-06-17 1939-06-15 Automatic telephone system Expired FR856396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US530085XA 1938-06-17 1938-06-17

Publications (1)

Publication Number Publication Date
FR856396A true FR856396A (en) 1940-06-12

Family

ID=21981322

Family Applications (1)

Application Number Title Priority Date Filing Date
FR856396D Expired FR856396A (en) 1938-06-17 1939-06-15 Automatic telephone system

Country Status (2)

Country Link
FR (1) FR856396A (en)
GB (1) GB530085A (en)

Also Published As

Publication number Publication date
GB530085A (en) 1940-12-04

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