EXHIBIT 10.13 COOPERATIVE DEVELOPMENT AGREEMENT This Agreement is entered into as of December 5, 1996 (the "Effective Date"), by and between GlobeSpan Technologies Inc., a Delaware corporation, with offices at 200 Laurel Ave, Middletown, NJ 07748...Confidential Treatment • June 30th, 1997 • Westell Technologies Inc • Telephone & telegraph apparatus • Florida
