creator Reiffel, Leonard Submitted by Aric Ahrens (ahrens@iit.edu) on 2010-02-23T17:47:36Z No. of bitstreams: 1 2797333.pdf: 229762 bytes, checksum: 098be09461096cceab910aa818b786d0 (MD5) Made available in DSpace on 2010-02-23T17:47:36Z (GMT). No. of bitstreams: 1 2797333.pdf: 229762 bytes, checksum: 098be09461096cceab910aa818b786d0 (MD5) Previous issue date: 1957-06-25 Armour Research Foundation of Illinois Institute of Technology 1957-06-25 2,797,333 en United States Patent Patent reformatted digital application/pdf No Copyright - United States http://rightsstatements.org/page/NoC-US/1.0/ Open Access http://hdl.handle.net/10560/islandora:9454