TY - GEN T1 - Three ambiguities of the doctrine of equivalents in the Federal Circuit / AU - Harris, Robert W., VL - 1987 Vol 69 No 2 pages 91-110 ID - 3905 KW - Patents. KW - Trademarks. KW - PATENTS : CASE LAW TI - Three ambiguities of the doctrine of equivalents in the Federal Circuit / ER -