Original Tape Recorder (Jun, 1936)
This is one of the earliest I’ve seen that uses magnetic tape and not wire.
Sound Recording Machine Perfected
OUT of the laboratories of a German firm comes the Magnetophon, a novel instrument for recording sound on narrow strips of film which can be preserved indefinitely. The bands resemble strips of talkie film. The Magnetophon records speeches and conversations, however fast, without difficulty. It uses the simple magnet-sound process. The recording bands are inexpensive.