EXHIBIT ASandstone Ventures LLC • November 29th, 2001 • Patent owners & lessors
Company FiledNovember 29th, 2001 IndustryPursuant to Regulation 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned persons (the "Reporting Persons") hereby agree to file with the Securities and Exchange Commission, the Statement on Schedule 13D (the "Schedule") to which this Agreement of Joint Filing is attached as an exhibit. Each of the Reporting Persons agrees that the information set forth in the Schedule with respect to such person will be true, complete and correct as of the date of the Schedule to the best of such Reporting Person's knowledge and belief after reasonable inquiry. Each of the Reporting Persons makes no representation as to the accuracy or adequacy of the information set forth in the Schedule with respect to any other Reporting Persons. Each of the Reporting Persons shall promptly notify the other Reporting Persons if any of the information set forth in the Schedule shall be or become inaccurate in any material respect or if he, she or it learns of information w