Valleylab, incorporated Boulder firm, joins $1 million venture to make and market implant medical devices. RMN N 3, 1979 p.94 Boulder medical equipment co. reviewed. RMN N 7, 1981 p.81 Description of Boulder surgical equipment firm. RMN N 8, 1982 p.76 New York firm plans to acquire Boulder firm. RMN N 12, 1982 p.97 Acquired by Pfizer, Inc., Robert Anderson remains chairMAn. DBW DENVER BUSINESS WEEKLY D 6, 1982 p.1,23