A patent for an early 3-inch disk and drive mechanism was filed in 1980 [1]. The inventor was working on it since the early seventies [2]. [1] https://www.goog

A patent for an early 3-inch disk and drive mechanism was filed in 1980 [1]. The inventor was working on it since the early seventies [2]. [1] https://www.google.com/patents/WO1981001906A1 https://www.google.com/patents/WO1981001906A1 [2] https://en.wikipedia.org/wiki/History_of_the_floppy_disk#The_3-inch_compact_floppy_disk https://en.wikipedia.org/wiki/History_of_the_floppy_disk#The...