Remember when you use the term "Dreadnought" you're referring to a very specific large "squarish" shape originated by Martin. Most guitars have used similar shapes to those originated by Martin, Gibson, and Torres.

The Lowden company has to the best of my knowledge never made a "Dreadnought" shaped instrument. (I may be wrong with newer models) The early Japanese assembled ones were based firmly on Gibson's J-50 design (note the "sloped" shoulders) and most of the larger ones payed homage to Gibson's J-200 model. I once owned one of the "J-50" style guitars and their sheer volume and power was unequalled.