| http://www.w3.org/ns/prov#value | - ted 1,940,671 1933 Anderson-m 350/96X therefrom by an air or other film having a relatively low- 2,227,422 l/ 1941 Boerstler 128/397 f ti index compared to that f the col-e 2,825,260 3/1958 OBrien ..88/1 3,010,357 11/1961 Hirschowitz ..88/1 13 Claims, 8 Drawing Figures F J V//////////////J L7EFLON 7555 QR IN; 240 151,; PAIENTEBFEB 81972 3,641,332 SHEET 1 BF 2 FIBER OPTICS ILLUMINATION SYSTEM BACKG
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