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.)
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Individual
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Individual
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Priority to ES3777ApriorityCriticalpatent/ES3777A1/en
Publication of ES3777A1publicationCriticalpatent/ES3777A1/en
ES3777A1883-11-191883-11-19
Mechanically moved lever to operate foresight points designed to avoid collisions of trains at railway stations.
ExpiredES3777A1
(en)