ES1036A1 - Secret switch enhancements for switching telephone systems. - Google Patents

Secret switch enhancements for switching telephone systems.

Info

Publication number
ES1036A1
ES1036A1 ES1036A ES1036A ES1036A1 ES 1036 A1 ES1036 A1 ES 1036A1 ES 1036 A ES1036 A ES 1036A ES 1036 A ES1036 A ES 1036A ES 1036 A1 ES1036 A1 ES 1036A1
Authority
ES
Spain
Prior art keywords
telephone systems
switching telephone
secret switch
enhancements
switch enhancements
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
ES1036A
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.)
Watson Thomas Augustus
Original Assignee
Watson Thomas Augustus
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 Watson Thomas Augustus filed Critical Watson Thomas Augustus
Priority to ES1036A priority Critical patent/ES1036A1/en
Publication of ES1036A1 publication Critical patent/ES1036A1/en
Expired legal-status Critical Current

Links

ES1036A 1880-07-06 1880-07-06 Secret switch enhancements for switching telephone systems. Expired ES1036A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES1036A ES1036A1 (en) 1880-07-06 1880-07-06 Secret switch enhancements for switching telephone systems.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1036A ES1036A1 (en) 1880-07-06 1880-07-06 Secret switch enhancements for switching telephone systems.

Publications (1)

Publication Number Publication Date
ES1036A1 true ES1036A1 (en) 1881-02-03

Family

ID=64110474

Family Applications (1)

Application Number Title Priority Date Filing Date
ES1036A Expired ES1036A1 (en) 1880-07-06 1880-07-06 Secret switch enhancements for switching telephone systems.

Country Status (1)

Country Link
ES (1) ES1036A1 (en)

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