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FR499817A - Improvements in automatic telephony - Google Patents

Improvements in automatic telephony

Info

Publication number
FR499817A
FR499817A FR499817DA FR499817A FR 499817 A FR499817 A FR 499817A FR 499817D A FR499817D A FR 499817DA FR 499817 A FR499817 A FR 499817A
Authority
FR
France
Prior art keywords
automatic telephony
telephony
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)
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 FR499817A publication Critical patent/FR499817A/en
Expired legal-status Critical Current

Links

FR499817D 1918-05-20 1919-05-19 Improvements in automatic telephony Expired FR499817A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US499817XA 1918-05-20 1918-05-20

Publications (1)

Publication Number Publication Date
FR499817A true FR499817A (en) 1920-02-24

Family

ID=43352018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR499817D Expired FR499817A (en) 1918-05-20 1919-05-19 Improvements in automatic telephony

Country Status (1)

Country Link
FR (1) FR499817A (en)

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