FR420817A - Phone system - Google Patents

Phone system

Info

Publication number
FR420817A
FR420817A FR420817A FR420817DA FR420817A FR 420817 A FR420817 A FR 420817A FR 420817 A FR420817 A FR 420817A FR 420817D A FR420817D A FR 420817DA FR 420817 A FR420817 A FR 420817A
Authority
FR
France
Prior art keywords
phone system
phone
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
FR420817A
Other languages
French (fr)
Inventor
Sydney Stein
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.)
SYDNEY STEIN
Original Assignee
SYDNEY STEIN
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 SYDNEY STEIN filed Critical SYDNEY STEIN
Application granted granted Critical
Publication of FR420817A publication Critical patent/FR420817A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/12—Calling substations, e.g. by ringing
FR420817A 1910-09-27 1910-09-27 Phone system Expired FR420817A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191022411T 1910-09-27

Publications (1)

Publication Number Publication Date
FR420817A true FR420817A (en) 1911-02-08

Family

ID=32493487

Family Applications (1)

Application Number Title Priority Date Filing Date
FR420817A Expired FR420817A (en) 1910-09-27 1910-09-27 Phone system

Country Status (3)

Country Link
DE (1) DE260272C (en)
FR (1) FR420817A (en)
GB (1) GB191022411A (en)

Also Published As

Publication number Publication date
DE260272C (en)
GB191022411A (en) 1911-03-23

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