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 Fernando CrudofiledCriticalFernando Crudo
Application grantedgrantedCritical
Publication of DK50468CpublicationCriticalpatent/DK50468C/da
DK50468D1932-04-221933-04-12Anordning til Fastholdelse af Fonogramark paa den cylindriske Fonogramholder i et optisk Apparat til Lydgengivelse.
DK50468C
(da)