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ES137209A1 - Improvements in relay devices to detect current changes in railroad circuits. - Google Patents

Improvements in relay devices to detect current changes in railroad circuits.

Info

Publication number
ES137209A1
ES137209A1 ES137209A ES137209A ES137209A1 ES 137209 A1 ES137209 A1 ES 137209A1 ES 137209 A ES137209 A ES 137209A ES 137209 A ES137209 A ES 137209A ES 137209 A1 ES137209 A1 ES 137209A1
Authority
ES
Spain
Prior art keywords
relay devices
current changes
detect current
railroad
circuits
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
ES137209A
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.)
SPX Technologies Inc
Original Assignee
General Railway Signal Co
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 General Railway Signal Co filed Critical General Railway Signal Co
Priority to ES137209A priority Critical patent/ES137209A1/en
Publication of ES137209A1 publication Critical patent/ES137209A1/en
Expired legal-status Critical Current

Links

ES137209A 1935-02-09 1935-02-09 Improvements in relay devices to detect current changes in railroad circuits. Expired ES137209A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES137209A ES137209A1 (en) 1935-02-09 1935-02-09 Improvements in relay devices to detect current changes in railroad circuits.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES137209A ES137209A1 (en) 1935-02-09 1935-02-09 Improvements in relay devices to detect current changes in railroad circuits.

Publications (1)

Publication Number Publication Date
ES137209A1 true ES137209A1 (en) 1935-06-01

Family

ID=65590679

Family Applications (1)

Application Number Title Priority Date Filing Date
ES137209A Expired ES137209A1 (en) 1935-02-09 1935-02-09 Improvements in relay devices to detect current changes in railroad circuits.

Country Status (1)

Country Link
ES (1) ES137209A1 (en)

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