FR487181A - Improvements to long distance automatic telephone systems - Google Patents

Improvements to long distance automatic telephone systems

Info

Publication number
FR487181A
FR487181A FR487181DA FR487181A FR 487181 A FR487181 A FR 487181A FR 487181D A FR487181D A FR 487181DA FR 487181 A FR487181 A FR 487181A
Authority
FR
France
Prior art keywords
long distance
telephone systems
automatic telephone
distance automatic
systems
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 Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR487181A publication Critical patent/FR487181A/en
Expired legal-status Critical Current

Links

FR487181D 1916-03-20 1917-03-17 Improvements to long distance automatic telephone systems Expired FR487181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US487181XA 1916-03-20 1916-03-20

Publications (1)

Publication Number Publication Date
FR487181A true FR487181A (en) 1918-06-12

Family

ID=43351775

Family Applications (1)

Application Number Title Priority Date Filing Date
FR487181D Expired FR487181A (en) 1916-03-20 1917-03-17 Improvements to long distance automatic telephone systems

Country Status (1)

Country Link
FR (1) FR487181A (en)

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