Per the wikipedia entry[1] IBM secured the patent, quote, > The Floppy Disk Drive Patent #3,678,481[11] was issued July 18, 1972 with named inventors Warren L.

Per the wikipedia entry[1] IBM secured the patent, quote, > The Floppy Disk Drive Patent #3,678,481[11] was issued July 18, 1972 with named inventors Warren L. Dalziel, Jay. B. Nilson, and Donald L. Wartner. [1] https://en.wikipedia.org/wiki/History_of_the_floppy_disk https://en.wikipedia.org/wiki/History_of_the_floppy_disk