TY - GEN T1 - Essentials for the drafting of US patent specifications and claims (and correction of patents) :Part 1 / AU - Armstrong, Iii James E., AU - Nikaido, David T. VL - 1987 No 1 pages 98-99 ID - 3343 KW - Patents. KW - Trademarks. KW - PATENTS : ACQUISITION : FORMALITIES, FILING APPLICATIONS TI - Essentials for the drafting of US patent specifications and claims (and correction of patents) :Part 1 / ER -