CC0 Usage Conditions ApplyClick for more information. This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the ...
Last patent date: 13 December 1921. Horn-type speaker on a cylindrical driver. Felt pad on bottom, cloth-covered wires. https://n2t.net/ark:/65665/ng49ca746a5-4c6e ...
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