Category:Signal Electric Mfg. Co.
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Media in category "Signal Electric Mfg. Co."
The following 2 files are in this category, out of 2 total.
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1920s TRF radio manufactured by Signal.jpg 3,088 × 2,128; 3.16 MB
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Vintage Signal Transmitting Key By Signal Electric Mfg. Co. (14973281072).jpg 3,201 × 2,730; 2.35 MB
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