div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: INVENTIONS ESEARCH REAS - Heliograph src=https:reader031fdocumentsfrreader031viewer202202070161f7eee19436ad1ee2199d84html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divpINVENTIONS RESEARCH AREASpdiv