At one time New Holland mad the cabs & controls for the Cat tractors, which Agco now makes for Cat. I haven't kept up, but at one time all 3 companies were involved in those machines, anyhow for a year and now for parts support still.
I forget which way it went, but John Deere (or Case?) bought out a self propelled sprayer maker, and to fullfill the contracts in place, had to ship them for a year or 2 with Case (or JD, if it's the other way engines in them.
Ah, parts support has to be interesting.
Agco is big worldwide.
Fent is big worldwide.
Fiat is really big - they own both Case and New Holland.
I think you better be careful looking up internet info or looking at self-serving home web pages that tend to inflate the home team.

It all depends on just how you word the question.....
--->Paul