Electroacoustic transducer of the so-called "electret" type, and a method of making such a transducer.

Research output: Patent

Keywords

@misc{b39e838a88eb4591a26a83bbe31d4164,

title = "Electroacoustic transducer of the so-called {"}electret{"} type, and a method of making such a transducer.",

keywords = "METIS-118277",

author = "A.J. Sprenkels and Piet Bergveld",

note = "Aanvraag octrooi door Derden ; 1e USA patentnr. 4,9",

year = "1990",

month = jan,

day = "1",

language = "Undefined",

type = "Patent",

}