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ES18440A2 - 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
ES18440A2
ES18440A2 ES18440A ES18440A ES18440A2 ES 18440 A2 ES18440 A2 ES 18440A2 ES 18440 A ES18440 A ES 18440A ES 18440 A ES18440 A ES 18440A ES 18440 A2 ES18440 A2 ES 18440A2
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
ES18440A
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 ES18440A priority Critical patent/ES18440A2/en
Publication of ES18440A2 publication Critical patent/ES18440A2/en
Expired legal-status Critical Current

Links

ES18440A 1895-12-18 1895-12-18 Improvements in telephone installations to increase the strength of sound. Expired ES18440A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES18440A ES18440A2 (en) 1895-12-18 1895-12-18 Improvements in telephone installations to increase the strength of sound.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES18440A ES18440A2 (en) 1895-12-18 1895-12-18 Improvements in telephone installations to increase the strength of sound.

Publications (1)

Publication Number Publication Date
ES18440A2 true ES18440A2 (en) 1896-02-16

Family

ID=69325972

Family Applications (1)

Application Number Title Priority Date Filing Date
ES18440A Expired ES18440A2 (en) 1895-12-18 1895-12-18 Improvements in telephone installations to increase the strength of sound.

Country Status (1)

Country Link
ES (1) ES18440A2 (en)

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