Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
AU49721/59A
Filing date
Publication of AU234667B2publicationCriticalpatent/AU234667B2/en
AU49721/59A1959-06-11Improvements in or relating to electrodynamic devices, more particularly microphones or loudspeakers
Expired - LifetimeAU234667B2
(en)