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A comment on Building a simple e-ink display from scratch. Parent comment

Re:Building a simple e-ink display from scratch by bluejekyll on Sunday April 16, 2017 @12:07PM (#14126240)
Shouldn't the original patents be expiring soon anyway?
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Re:Building a simple e-ink display from scratch by xeemzorz on Sunday April 16, 2017 @12:22PM (#14126293)
Patents are only a very small portion of IP value. A huge portion of knowledge is kept as trade secrets. It's not easy to manufacture epaper.
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