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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES0051696UpriorityCriticalpatent/ES51696Y/en
Publication of ES51696UpublicationCriticalpatent/ES51696U/en
Application grantedgrantedCritical
Publication of ES51696YpublicationCriticalpatent/ES51696Y/en
PERFECTED DOUBLE-ACTING LIGHT BULB, characterized by two cylinders of different sizes, one of which bears on one of its ends an adjusting ring carved in the same cylinder body, while the other has, at one end, a circular groove. (Machine-translation by Google Translate, not legally binding)