ES209470A1 - Improvements in electromagnetic acoustic warning appliances (Machine-translation by Google Translate, not legally binding)
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Improvements in electromagnetic acoustic warning appliances (Machine-translation by Google Translate, not legally binding)
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Improvements in the electromagnetic acoustic warning devices that essentially consist of one of them in an electromagnet core constituted by a magnetic sheet package cut in a u-shape and directly attached to the central part of the bottom of the shell or casing in the melting operation of the latter being wound on said core the corresponding coils whose terminals are connected to the edges arranged on the external part of the envelope. (Machine-translation by Google Translate, not legally binding)
ES209470A1953-05-251953-05-25Improvements in electromagnetic acoustic warning appliances (Machine-translation by Google Translate, not legally binding)
ExpiredES209470A1
(en)