Long-time Slashdot reader blackbearnh writes: Since the COVID-19 pandemic has made Personal Protective Equipment worth it’s weight in gold, Makers have been trying to help bridge the gap. While sewn masks have been the most common solution, the 3D printing community has been pitching in as well. The Montana Mask has been one of the most popular designs… Thursday, the group Make the Masks announced that the design files and STLs to print the mask have been released under the GNU General Public License v3, allowing anyone to print, sell, remix or improve the design, as long as they conform to the license. Importantly, the GPLv3 includes an international non-exclusive patent grant, meaning that even if the inventors decide to apply for a patent, it will not restrict anyone from using the design.
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