CERN Open Hardware License

The CERN Open Hardware License (OHL or CERN OHL) is a license used in open-source hardware projects. It was created by CERN, which published version 1.0 in March 2011. Version 1.1 was published in July 2011. Version 1.2 was published in September 2013.

On the CERN OHL website they have a list of projects using their license. These projects include:

The Cern OHL is an accepted free content license according to the Free Cultural Works definition.

...
Wikipedia