ES74004A1 - Improvements in telephone call systems. - Google Patents

Improvements in telephone call systems.

Info

Publication number
ES74004A1
ES74004A1 ES74004A ES74004A ES74004A1 ES 74004 A1 ES74004 A1 ES 74004A1 ES 74004 A ES74004 A ES 74004A ES 74004 A ES74004 A ES 74004A ES 74004 A1 ES74004 A1 ES 74004A1
Authority
ES
Spain
Prior art keywords
telephone call
call systems
systems
telephone
call
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
ES74004A
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.)
HASTINGS RUBEN CHRISTOPHER MILLER
Original Assignee
HASTINGS RUBEN CHRISTOPHER MILLER
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 HASTINGS RUBEN CHRISTOPHER MILLER filed Critical HASTINGS RUBEN CHRISTOPHER MILLER
Priority to ES74004A priority Critical patent/ES74004A1/en
Publication of ES74004A1 publication Critical patent/ES74004A1/en
Expired legal-status Critical Current

Links

ES74004A 1920-06-10 1920-06-10 Improvements in telephone call systems. Expired ES74004A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES74004A ES74004A1 (en) 1920-06-10 1920-06-10 Improvements in telephone call systems.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES74004A ES74004A1 (en) 1920-06-10 1920-06-10 Improvements in telephone call systems.

Publications (1)

Publication Number Publication Date
ES74004A1 true ES74004A1 (en) 1920-09-01

Family

ID=64246019

Family Applications (1)

Application Number Title Priority Date Filing Date
ES74004A Expired ES74004A1 (en) 1920-06-10 1920-06-10 Improvements in telephone call systems.

Country Status (1)

Country Link
ES (1) ES74004A1 (en)

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