Digest of decisions of law and practice in the Patent office and the United States courts in patents, trademarks, copyrights and labels, 1912-1919; a supplement to Pollard's digest, 1897-1912,

"The original plan of Hart's patent digest, 1886-1897 and of Pollard's digest, 1898-1912, has been followed."--Pref.Mode of access: Internet