0000950135-08-003439 8-K 2 20080506 2.02 9.01 20080506 20080506 IPG PHOTONICS CORP 0001111928 3674 043444218 DE 8-K 34 001-33155 08804640 50 OLD WEBSTER ROAD OXFORD MA 01540 5083731100 50 OLD WEBSTER ROAD OXFORD MA 01540 8-K 1 b70032ipe8vk.htm IPG PHOTONICS CORPORATION EX-99.1 2 b70032ipexv99w1.htm EX-99.1 PRESS RELEASE DATED MAY 06, 2008