ES137329A1 - An automatic acoustic procedure to indicate the presence of a train in the level crossings. - Google Patents

An automatic acoustic procedure to indicate the presence of a train in the level crossings.

Info

Publication number
ES137329A1
ES137329A1 ES137329A ES137329A ES137329A1 ES 137329 A1 ES137329 A1 ES 137329A1 ES 137329 A ES137329 A ES 137329A ES 137329 A ES137329 A ES 137329A ES 137329 A1 ES137329 A1 ES 137329A1
Authority
ES
Spain
Prior art keywords
train
indicate
level crossings
automatic acoustic
procedure
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
ES137329A
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 ES137329A priority Critical patent/ES137329A1/en
Publication of ES137329A1 publication Critical patent/ES137329A1/en
Expired legal-status Critical Current

Links

ES137329A 1935-02-26 1935-02-26 An automatic acoustic procedure to indicate the presence of a train in the level crossings. Expired ES137329A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES137329A ES137329A1 (en) 1935-02-26 1935-02-26 An automatic acoustic procedure to indicate the presence of a train in the level crossings.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES137329A ES137329A1 (en) 1935-02-26 1935-02-26 An automatic acoustic procedure to indicate the presence of a train in the level crossings.

Publications (1)

Publication Number Publication Date
ES137329A1 true ES137329A1 (en) 1935-06-16

Family

ID=65590633

Family Applications (1)

Application Number Title Priority Date Filing Date
ES137329A Expired ES137329A1 (en) 1935-02-26 1935-02-26 An automatic acoustic procedure to indicate the presence of a train in the level crossings.

Country Status (1)

Country Link
ES (1) ES137329A1 (en)

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