FR495661A - Improvements to prepaid telephone systems - Google Patents

Improvements to prepaid telephone systems

Info

Publication number
FR495661A
FR495661A FR495661DA FR495661A FR 495661 A FR495661 A FR 495661A FR 495661D A FR495661D A FR 495661DA FR 495661 A FR495661 A FR 495661A
Authority
FR
France
Prior art keywords
telephone systems
prepaid telephone
prepaid
systems
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.)
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 FR495661A publication Critical patent/FR495661A/en
Expired legal-status Critical Current

Links

FR495661D 1918-02-11 1919-02-10 Improvements to prepaid telephone systems Expired FR495661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US495661TA 1918-02-11 1918-02-11

Publications (1)

Publication Number Publication Date
FR495661A true FR495661A (en) 1919-10-15

Family

ID=43479317

Family Applications (1)

Application Number Title Priority Date Filing Date
FR495661D Expired FR495661A (en) 1918-02-11 1919-02-10 Improvements to prepaid telephone systems

Country Status (1)

Country Link
FR (1) FR495661A (en)

Similar Documents

Publication Publication Date Title
FR495661A (en) Improvements to prepaid telephone systems
FR500065A (en) Improvements to automatic telephone systems
FR505282A (en) Improvements to automatic telephone systems
FR21115E (en) Improvements to metered telephone systems
FR503917A (en) Improvements to charging telephone systems
FR501652A (en) Improvements to semi-automatic telephone systems
FR21146E (en) Improvements to metered telephone systems
FR499529A (en) Improvements to metered telephone systems
FR501938A (en) Improvements to automatic telephone systems
FR27576E (en) Improvements to automatic telephone systems
FR501146A (en) Improvements to automatic telephone systems
FR498083A (en) Improvements to automatic telephone systems
FR495452A (en) Improvements to automatic telephone systems
FR505640A (en) Improvements to automatic telephone systems
FR506862A (en) Improvements to automatic telephone systems
FR509105A (en) Improvements to automatic telephone systems
FR500994A (en) Improvements to automatic telephone systems
FR510253A (en) Improvements to automatic telephone exchange systems
FR517087A (en) Improvements to prepaid telephone systems
FR475417A (en) Improvements to telephone systems
FR492272A (en) Improvements to automatic telephone systems
FR22486E (en) Improvements to automatic telephone network systems
FR497452A (en) Improvements to automatic telephone systems
FR512156A (en) Improvements to telephone systems using self-mechanical switches
FR500151A (en) Gargousse refinements