<±×¸² 1> ½Ã°£ ³ëÃâ µ¤°³°¡ ´Þ¸° ÃÖÃÊÀÇ ÄÚ´Ú Ä«¸Þ¶ó. (Courtesy Donald
Ryon,
Patent Museum, Eastman Kodak Co., Rochester, N.Y.)