UncannyGarlic said:Parody, likely used with permission, ditto, ditto, and Starship Troopers created and popularized the modern concept of power armor.Two-step said:Coca Cola(Nuka Cola), Heckler & Koch(H&K), GE (M-134), Gill Hibben(throwing knife), Games Workshop(power armor)
Yes, I suppose that Bethesda might have sought and gained permission to use the names and likenesses of certain companies and their products. But, I don't think that I would bet a lot of money on it. Also, if rights where granted by the owning companies, the "is a trade mark of" or "used with permission" credits, and "Thanks to..." would have been given.
Heinlein did not create the concept of power armor. Heinlein borrowed and expanded on the idea of self-powered space armor from the writings of E.E. "Doc" Smith, a sci-fi writer of the 1930.