TY - BOOK AU - Deller,Anthony William AU - Walker,Albert Henry TI - Walker on patents AV - KF;3114 .D4 PY - 1937/// CY - New York PB - Baker, Voorhis, 1937. KW - Patent laws and legislation KW - United States KW - Local N1 - Kept up to date by pocket and cumulative supplements; Based on Text-book of the patent laws of the United States of America, by A. H. Walker, first published in 1883 ER -