Hello,
This topic is somehow connected to aviation/aerospace as it touches airflow, so I am posting it here.
I am looking for a ribbon ceiling fan design as described here and in other websites.
https://newatlas.com/ribbon-ceiling-fan/15660/
http://inventorspot.com/articles/ribbon_ceiling_fan_cool_next_generation_cooler_44379
(The patent over this has been abandoned so there's no way to retreive it)
Thanks
If you don't receive the email within an hour (and you've checked your Spam folder), email us as confirmation@grabcad.com.