I have one of these shutters, Kodak Ltd listed them in their 1940 Professional catalogue. Here in the UK Kodak had were also wholesaler, as well as manufacturer. They didn't sell competitors products, rather items to compliment their own products
There are better shutter options, I have a wide variety which I can use with my larger shutter-less lenses. Focal plane, TP roller blind (I have 80+), LUC, Gitzo, Dallmeyer Ideal, etc.
This is a large Thornton Pickard roller blind shutter, 1/10 to 1/90 + T, the lens here is a 20" (500mm) f8 Rapid Rectilinear, for a 12"x10" camera. This particular shutter is the 3½" version, it also fits my 8¼" f3 Dallmeyer 2B, which is an 1864 Quick acting Portrait Petzval lens.
I also have a large Gitzo studio shutter, a single speed and T front mounting leaf shutter, with flash sync, it fits the same lenses and I use it for studio work.
The Kodak Studio Shutter in the catalogue is a rear mounted Dallmeyer Ideal, these were Packard Ideal shutters made under licence here in the UK. Packard shutters are still made.
Ian