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Priority to ES1969151764UpriorityCriticalpatent/ES151764Y/en
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Publication of ES151764YpublicationCriticalpatent/ES151764Y/en
Ignition Installations For Internal Combustion Engines
(AREA)
Abstract
Optical indicator apparatus for low frequency signals characterized by the decomposition of the audible spectrum in several frequency ranges so that each of them excites the ignition of a lamp of a certain color. (Machine-translation by Google Translate, not legally binding)
ES1969151764U1969-09-151969-09-15
OPTICAL INDICATOR APPARATUS FOR LOW FREQUENCY SIGNALS.
ExpiredES151764Y
(en)