ES49480A3 - A security transformer for telephone and telegraph lines. - Google Patents

A security transformer for telephone and telegraph lines.

Info

Publication number
ES49480A3
ES49480A3 ES49480A ES49480A ES49480A3 ES 49480 A3 ES49480 A3 ES 49480A3 ES 49480 A ES49480 A ES 49480A ES 49480 A ES49480 A ES 49480A ES 49480 A3 ES49480 A3 ES 49480A3
Authority
ES
Spain
Prior art keywords
telephone
telegraph lines
security transformer
transformer
security
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
ES49480A
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.)
PEREGO ARTURO
Original Assignee
PEREGO ARTURO
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 PEREGO ARTURO filed Critical PEREGO ARTURO
Priority to ES49480A priority Critical patent/ES49480A3/en
Publication of ES49480A3 publication Critical patent/ES49480A3/en
Expired legal-status Critical Current

Links

ES49480A 1910-12-14 1910-12-14 A security transformer for telephone and telegraph lines. Expired ES49480A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES49480A ES49480A3 (en) 1910-12-14 1910-12-14 A security transformer for telephone and telegraph lines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES49480A ES49480A3 (en) 1910-12-14 1910-12-14 A security transformer for telephone and telegraph lines.

Publications (1)

Publication Number Publication Date
ES49480A3 true ES49480A3 (en) 1911-01-16

Family

ID=69497135

Family Applications (1)

Application Number Title Priority Date Filing Date
ES49480A Expired ES49480A3 (en) 1910-12-14 1910-12-14 A security transformer for telephone and telegraph lines.

Country Status (1)

Country Link
ES (1) ES49480A3 (en)

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