0000820318-08-000046 4 1 20080819 20080821 20080821 II-VI INC 0000820318 3827 251214948 PA 0630 375 SAXONBURG BLVD SAXONBURG PA 16056 724-352-4455 375 SAXONBURG BLVD SAXONBURG PA 16056 SOGNEFEST PETER W 0001196392 4 34 000-16195 081031364 C/O II-VI INC 375 SAXONBURG BLVD SAXONBURG PA 16056 7243524455 375 SAXONBURG BLVD SAXONBURG PA 16056 4 1 primary_doc.xml PRIMARY DOCUMENT