Sort of add to this as a corresponding statement, but essentially captured German magnetic technology after WWII was extensively researched, analyzed by analysts, data industry scientists for several decades and some of their inventions were the first Beta-max VCR recorder, 8-and-12-track rock and roll/entertainment musical studio recording machines until computers and samplers replaced them by the early-to-mid 80's, first cell phones which debuted IIRC, in 1971.