0001140361-09-027723 3 2 20091201 20091201 20091201 LACY PAUL A 0001193635 3 34 000-18059 091214102 KRONOS INCORP 297 BILLERICA RD CHELMSFORD MA 01824 PARAMETRIC TECHNOLOGY CORP 0000857005 7372 042866152 MA 0930 140 KENDRICK STREET NEEDHAM MA 02494 7813705000 140 KENDRICK STREET NEEDHAM MA 02494 3 1 doc1.xml FORM 3 EX-24 2 poa1.htm POWER OF ATTORNEY