Stanford Ovshinsky - The Most Important Inventor You've Never Heard of

[Luxman]

50 years, makes you wonder how many inventions already exist that aren't allowed to be produced by the patent owner or high costs...like a battery that will make all fossil fuel powered vehicles obsolete...makes you wonder...

https://blogs.scientificamerican.com/observations/the-most-important-inventor-youve-never-heard-of/