Patents for inventions and the protection of industrial designs
White, Blanco T.A.
Patents for inventions and the protection of industrial designs - 4 ed - LondonGB Stevens and sons 1974 - lxix, 749 p.
04.01.02 W582
Patents for inventions and the protection of industrial designs - 4 ed - LondonGB Stevens and sons 1974 - lxix, 749 p.
04.01.02 W582