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ROMAN HERNANDEZ LUIS
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ROMAN HERNANDEZ LUIS
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Application filed by ROMAN HERNANDEZ LUISfiledCriticalROMAN HERNANDEZ LUIS
Priority to ES0029423UpriorityCriticalpatent/ES29423Y/en
Publication of ES29423UpublicationCriticalpatent/ES29423U/en
Application grantedgrantedCritical
Publication of ES29423YpublicationCriticalpatent/ES29423Y/en
Apparatus for hearing, essentially characterized by a perforated piece of conical shape bearing in its upper part a circular projection to accommodate a kind of sheath and a recess in its lower part and threaded to enter another piece. (Machine-translation by Google Translate, not legally binding)
ES0029423U1951-12-271951-12-27
Hearing aid
ExpiredES29423Y
(en)
A procedure for the obtaining of alcaminic esters of N-monoalquylated and N-mono-alkyl-oxyalkylated aminooxibenzoic acids. (Machine-translation by Google Translate, not legally binding)