5 ms·
One counter example to this argument is Invisalign. 3D printed braces.
by juancampa 9y ago
One counter example to this argument is Invisalign. 3D printed braces.
- deleted 9y ago[deleted]
- BugsJustFindMe 9y agoI don't see how something for sale in the US since 1999 is a counterexample. That was 19 years ago.