creator Hill, Vernon L. creator Rausch, John J. creator Hess, Alan L. creator Van Thyne, Ray J. creator Nichols, Harry R. Submitted by Aric Ahrens (ahrens@iit.edu) on 2011-08-30T18:36:40Z No. of bitstreams: 1 3446615.pdf: 242466 bytes, checksum: b0aea01eb9437688db8bdef5724ae743 (MD5) Made available in DSpace on 2011-08-30T18:36:40Z (GMT). No. of bitstreams: 1 3446615.pdf: 242466 bytes, checksum: b0aea01eb9437688db8bdef5724ae743 (MD5) Previous issue date: 1969-05-27 IIT Research Institute 4/23/2009 1969-05-27 3,446,615 http://hdl.handle.net/10560/2152 en United States Patent Patent reformatted digital application/pdf No Copyright - United States http://rightsstatements.org/page/NoC-US/1.0/ Open Access