The story
From Blattner + -phone, after its inventor, Ludwig Blattner (1881–1935).
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: An early magnetic sound-recording device. Full definition →
From Blattner + -phone, after its inventor, Ludwig Blattner (1881–1935).
Etymology from Wiktionary, CC BY-SA 4.0.