Brown straight-sided conical horn type loudspeaker

Brown straight-sided conical horn type loudspeaker

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Brown straight-sided conical horn type loudspeaker
Science Museum Group
© The Board of Trustees of the Science Museum

Brown straight-sided conical horn type loudspeaker

Details

Category:
Radio Communication
Object Number:
1933-618
type:
loudspeaker
credit:
Mr. S.G. Brown.