CUSIP No. 452327109 13G Page 26 of 27 PagesAgreement • February 14th, 2002 • Venrock Associates • Laboratory analytical instruments
Contract Type FiledFebruary 14th, 2002 Company IndustryPursuant to Rule 13d-1(k)(1) promulgated pursuant to the Securities Exchange Act of 1934, as amended, the undersigned agree that the attached Schedule 13G is being filed on behalf of each of the undersigned.