First Uses of the Telephone

| View Cart ⇗ | Info

This telephone uses magnets that converts sound into electrical signals to be transmitted over distances and then converts the signals back.


Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)


TIFF (full resolution)

2400×2192, 887.9 KiB

Large GIF

1024×935, 168.0 KiB

Medium GIF

640×584, 88.6 KiB

Small GIF

320×292, 32.4 KiB