0000820318-06-000020 4 1 20060812 20060815 20060815 II-VI INC 0000820318 3827 251214948 PA 0630 375 SAXONBURG BLVD SAXONBURG PA 16056 724-352-4455 375 SAXONBURG BLVD SAXONBURG PA 16056 MATTERA VINCENT D JR 0001343837 4 34 000-16195 061033333 (724) 352-4455 601 APPLEHILL COURT GIBSONIA PA 15044 4 1 primary_doc.xml PRIMARY DOCUMENT