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ES43991A1 - A three-wire system for telephone installations. - Google Patents

A three-wire system for telephone installations.

Info

Publication number
ES43991A1
ES43991A1 ES43991A ES43991A ES43991A1 ES 43991 A1 ES43991 A1 ES 43991A1 ES 43991 A ES43991 A ES 43991A ES 43991 A ES43991 A ES 43991A ES 43991 A1 ES43991 A1 ES 43991A1
Authority
ES
Spain
Prior art keywords
wire system
telephone installations
installations
telephone
wire
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
ES43991A
Other languages
Spanish (es)
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.)
Kellogg Switchboard and Supply Co
Original Assignee
Kellogg Switchboard and Supply Co
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 Kellogg Switchboard and Supply Co filed Critical Kellogg Switchboard and Supply Co
Priority to ES43991A priority Critical patent/ES43991A1/en
Publication of ES43991A1 publication Critical patent/ES43991A1/en
Expired legal-status Critical Current

Links

ES43991A 1908-09-10 1908-09-10 A three-wire system for telephone installations. Expired ES43991A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES43991A ES43991A1 (en) 1908-09-10 1908-09-10 A three-wire system for telephone installations.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES43991A ES43991A1 (en) 1908-09-10 1908-09-10 A three-wire system for telephone installations.

Publications (1)

Publication Number Publication Date
ES43991A1 true ES43991A1 (en) 1908-10-16

Family

ID=64221444

Family Applications (1)

Application Number Title Priority Date Filing Date
ES43991A Expired ES43991A1 (en) 1908-09-10 1908-09-10 A three-wire system for telephone installations.

Country Status (1)

Country Link
ES (1) ES43991A1 (en)

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