AFAIK, Kodak made or had made for them, custom perfing and slitting and chopping equipment. The dies were replaced on a regular basis. The ones I saw were rotary.

The cartoon style is Don Martin.

And Jason, yes, we lose speed and that is why I said that this puts us in a worse position for speed/grain. We would probably turn an ISO 100 material with TriX grain into an ISO 25 - 50 material with TriX grain. Then the question is, is this suitable for 35mm. Probably not. For 120, probably but maybe marginal. For 4x5? Probably just right. But, IDK until I do the experiments. I have the AH dye here. It is an Oxonol dye that dissolves in developer.