The inventor's adviser and manufacturer's handbook to patents, designs & trade marks : being an instructional guide to the commercial development of inventions, their protection by patents at home and abroad, and the valuation and disposal of patent rights : with a treatise on patent law and practice in Great Britain, précis of foreign patent laws, &c., and chapters on the nature and registration of designs and trade marks : also appendices of forms for every country, authorities, sizes of drawings, &c. / by Reginald Haddan.