John, "Indian Arms" was the registered name. It was located on Dequindre north of Davison in Detroit. They made more than 1,000 of the stainless steel PPK clones. I know, because I worked there. They were 380s when I was there. Can't say if they ever produced anything else, they had a 22 revolver prototype in the office.
The quality on the 380 auto was very good and it was said that the parts would interchange with a PPK, but I think some fitting would be in order.
I can't remember the owner's name, Italian guy, not much fun to work for. Got in financial trouble and folded.