Category:Photophone
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| Subclass of | telecommunication | ||
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Media in category "Photophone"
The following 8 files are in this category, out of 8 total.
1930's illumiated sign for sound film system.jpg 1,024 × 682; 214 KB
Bells Photophon Schema.jpg 640 × 396; 36 KB
Die Gartenlaube (1880) b 788.jpg 1,566 × 822; 644 KB
Photophone plaque (no copyright applies).jpg 641 × 438; 64 KB
Photophone receiver 4074172975 288f2808f0 o.jpg 814 × 1,243; 271 KB
Photophone transmitter 4074931746 9f996df841 b.jpg 1,024 × 756; 635 KB
Photophone.jpg 450 × 196; 21 KB
Photophony1.jpg 577 × 384; 24 KB
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