ES90141A1 - Improvements in electrical call devices. - Google Patents

Improvements in electrical call devices.

Info

Publication number
ES90141A1
ES90141A1 ES90141A ES90141A ES90141A1 ES 90141 A1 ES90141 A1 ES 90141A1 ES 90141 A ES90141 A ES 90141A ES 90141 A ES90141 A ES 90141A ES 90141 A1 ES90141 A1 ES 90141A1
Authority
ES
Spain
Prior art keywords
call devices
electrical call
electrical
devices
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
ES90141A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to ES90141A priority Critical patent/ES90141A1/en
Publication of ES90141A1 publication Critical patent/ES90141A1/en
Expired legal-status Critical Current

Links

ES90141A 1924-07-12 1924-07-12 Improvements in electrical call devices. Expired ES90141A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES90141A ES90141A1 (en) 1924-07-12 1924-07-12 Improvements in electrical call devices.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES90141A ES90141A1 (en) 1924-07-12 1924-07-12 Improvements in electrical call devices.

Publications (1)

Publication Number Publication Date
ES90141A1 true ES90141A1 (en) 1924-10-16

Family

ID=64263200

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90141A Expired ES90141A1 (en) 1924-07-12 1924-07-12 Improvements in electrical call devices.

Country Status (1)

Country Link
ES (1) ES90141A1 (en)

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