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ES17490A1 - Improvements in telephone installations to increase the strength of sound. - Google Patents

Improvements in telephone installations to increase the strength of sound.

Info

Publication number
ES17490A1
ES17490A1 ES17490A ES17490A ES17490A1 ES 17490 A1 ES17490 A1 ES 17490A1 ES 17490 A ES17490 A ES 17490A ES 17490 A ES17490 A ES 17490A ES 17490 A1 ES17490 A1 ES 17490A1
Authority
ES
Spain
Prior art keywords
sound
strength
increase
telephone installations
installations
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
ES17490A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to ES17490A priority Critical patent/ES17490A1/en
Publication of ES17490A1 publication Critical patent/ES17490A1/en
Expired legal-status Critical Current

Links

ES17490A 1895-05-21 1895-05-21 Improvements in telephone installations to increase the strength of sound. Expired ES17490A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES17490A ES17490A1 (en) 1895-05-21 1895-05-21 Improvements in telephone installations to increase the strength of sound.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES17490A ES17490A1 (en) 1895-05-21 1895-05-21 Improvements in telephone installations to increase the strength of sound.

Publications (1)

Publication Number Publication Date
ES17490A1 true ES17490A1 (en) 1895-07-16

Family

ID=64112337

Family Applications (1)

Application Number Title Priority Date Filing Date
ES17490A Expired ES17490A1 (en) 1895-05-21 1895-05-21 Improvements in telephone installations to increase the strength of sound.

Country Status (1)

Country Link
ES (1) ES17490A1 (en)

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