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BlackBerry's iconic keyboard patent has expired
(mobilesyrup.com)
This is a most excellent place for technology news and articles.
I have a Unihertz Titan and love it. I guess they skirted around the keyboard patent. https://www.unihertz.com/products/titan
It's not three straight rows of keys with the other buttons on a fourth row at the bottom. That's what BB had a design patent for.