This report provides the survey of Japanese spring technological heritage in the 20th century which was conducted by a JSSE designated committee from 2009 to 2012. The 115 proposed items include coiling machines, spring testing machines, books and papers on spring design & spring manufacturing. Their whereabouts and technical significance are listed in this report. The existing historical coiling machines are listed in chronological manner. The development of spring manufacturing technology is also explained in this table.