Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Turner Haile LutherfiledCriticalTurner Haile Luther
Publication of CH43657ApublicationCriticalpatent/CH43657A/de
CH43657A1908-02-241908-02-24Verfahren und Vorrichtung zum Verstärken und zum Verändern der Klangfarbe von durch Sprechmaschinen wiedergegebenen Tönen
CH43657A
(de)