4 ms·
Pretty cool. I've always thought it would be cool to do something like this for glasses, but never had the guts.
by kondro 14y ago
Pretty cool. I've always thought it would be cool to do something like this for glasses, but never had the guts.
- ryandvm 14y agohttp://www.google.com/patents/US5730155 http://www.google.com/patents/US5730155