FR486971A - Substation mechanism for automatic telephone - Google Patents

Substation mechanism for automatic telephone

Info

Publication number
FR486971A
FR486971A FR486971DA FR486971A FR 486971 A FR486971 A FR 486971A FR 486971D A FR486971D A FR 486971DA FR 486971 A FR486971 A FR 486971A
Authority
FR
France
Prior art keywords
automatic telephone
substation
substation mechanism
telephone
automatic
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
Alton E Stevens
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR486971A publication Critical patent/FR486971A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR486971D 1917-09-13 1917-09-13 Substation mechanism for automatic telephone Expired FR486971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR486971T 1917-09-13

Publications (1)

Publication Number Publication Date
FR486971A true FR486971A (en) 1918-05-21

Family

ID=1523528

Family Applications (1)

Application Number Title Priority Date Filing Date
FR486971D Expired FR486971A (en) 1917-09-13 1917-09-13 Substation mechanism for automatic telephone

Country Status (1)

Country Link
FR (1) FR486971A (en)

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