0000950135-08-003610 10-Q 4 20080331 20080512 20080512 IPG PHOTONICS CORP 0001111928 3674 043444218 DE 10-Q 34 001-33155 08820777 50 OLD WEBSTER ROAD OXFORD MA 01540 5083731100 50 OLD WEBSTER ROAD OXFORD MA 01540 10-Q 1 b69713ige10vq.htm IPG PHOTONICS CORPORATION EX-31.1 2 b69713igexv31w1.htm EX-31.1 SECTION 302 CERTIFICATION OF THE CEO EX-31.2 3 b69713igexv31w2.htm EX-31.2 SECTION 302 CERTIFICATION OF THE CFO EX-32 4 b69713igexv32.htm EX-32 SECTION 906 CERTIFICATION OF THE CEO & CFO