[cctalk] Soviet PDP clones

Hi all, After some discussion on reddit about russian PDP-11 clones, i made the (perhaps erronous) claim that the PDP series in general was cloned by the Soviets. I’m aware that there was a lot of QBUS/LSI PDP-11 clones, and depite poor documentation, there is significant evidence of PDP-8 clones. Also, depite not strictly a “PDP”, the VAX series was also cloned. However, i’m curious whether anyone has any evidence of either the 18-bit or 36-bit PDP machines being cloned? I imagine that given the rather lacklustre success of the 18-bit series, that there would have been less demand for an 18-bit PDP machine in the Soviet Union, but i find it quite hard to believe that no attempt to clone the PDP-6 and PDP-10 machines would have been attempted. Does anyone here have any information on such clones? Cheers, Josh Rice