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A comment on The patent on the Space Shuttle has expired. Parent comment

Re:The patent on the Space Shuttle has expired by rzzzt on Saturday December 05, 2015 @07:51PM (#10683908)
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

[2] https://en.wikipedia.org/wiki/History_of_the_floppy_disk#The...

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