0000891020-00-000514 DEF 14A 1 20000427 20000317 SONUS PHARMACEUTICALS INC 0000949858 2835 954343413 DE 1231 DEF 14A 34 000-21243 571994 22026 2OTH AVE SE STE 102 BOTHELL WA 98021 2064879500 22026 20TH AVENUE SE, SUITE 102 22026 20TH AVENUE SE, SUITE 102 BOTHELL WA 98021 DEF 14A 1 000089102000000514-001-seq1-def-14a.txt NOTICE AND PROXY STATEMENT