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ES84714A1 - A coupling to reduce sound drift on grouped telephone lines. - Google Patents

A coupling to reduce sound drift on grouped telephone lines.

Info

Publication number
ES84714A1
ES84714A1 ES84714A ES84714A ES84714A1 ES 84714 A1 ES84714 A1 ES 84714A1 ES 84714 A ES84714 A ES 84714A ES 84714 A ES84714 A ES 84714A ES 84714 A1 ES84714 A1 ES 84714A1
Authority
ES
Spain
Prior art keywords
coupling
telephone lines
reduce sound
drift
grouped 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
ES84714A
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.)
N V De Nederlandsche Thermo Telephoon Mij
Original Assignee
N V De Nederlandsche Thermo Telephoon Mij
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 N V De Nederlandsche Thermo Telephoon Mij filed Critical N V De Nederlandsche Thermo Telephoon Mij
Priority to ES84714A priority Critical patent/ES84714A1/en
Publication of ES84714A1 publication Critical patent/ES84714A1/en
Expired legal-status Critical Current

Links

ES84714A 1923-03-12 1923-03-12 A coupling to reduce sound drift on grouped telephone lines. Expired ES84714A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES84714A ES84714A1 (en) 1923-03-12 1923-03-12 A coupling to reduce sound drift on grouped telephone lines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES84714A ES84714A1 (en) 1923-03-12 1923-03-12 A coupling to reduce sound drift on grouped telephone lines.

Publications (1)

Publication Number Publication Date
ES84714A1 true ES84714A1 (en) 1923-06-01

Family

ID=64250944

Family Applications (1)

Application Number Title Priority Date Filing Date
ES84714A Expired ES84714A1 (en) 1923-03-12 1923-03-12 A coupling to reduce sound drift on grouped telephone lines.

Country Status (1)

Country Link
ES (1) ES84714A1 (en)

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