Cuprajake
I have no idea If the dimensions are exactly the same but I would he surprised if they deviate in any substantial way since both are following the LSM pattern grouphead. My force tamper that I had used for my izzo works with the nurri, though tbe tamper is slightly smaller than the diameter of both the izzo and the nurri portafilters, so I suppose that doesn’t really necessarily mean that the nurri portafilter is identical with the izzo one.
Still, if they differ then that’s fine too since ether are made by two different makers and the parts they are using are also apparently from different suppliers where it comes to the grouphead anyway.
On patents the nurri is apparently the subject of some new patent applications that are pending so it does bring new things to the table compared to other levers. It’s all for the good of the consumers like us because we get to have a wider and better palette of choices and the innovation by all of the manufacturers will spur each other on to produce yet better and better machines!