They sold lenses to most camera manufacturers. Alpa is another current one. But not all camera manufacturers put their name on the lens.
Calumet purchased lenses two different ways. They bought private label lenses that they called Caltar. Just like Sinar sold private lable versions called Sinaron. Calumet also bought manufacture's branded lenses that they sold as Rodenstock. They sold those for more then they sold the Caltar.
In the case of Linhof and Sinar those camera manufacturers tested the lenses and those that passed the test were marked with Linhof or Sinar's name (depending on which factory bought and tested the lenses). Alpa also does this today.
In the case of most other camera manufacturers the lenses were just labled with the lens factory name and not the camera manufacturer's name.