Fig. 1
From: Near is more: learning efficiency in research and development innovation among interlocking firms
Trends in the Number of Interlocking Directors and the Number of Authorized Patents per year. Noted: The figure plots trends in the number of interlocking directors and the number of authorized patents in China. The blue line shows the average number of patents authorized per A-share listed firm in China each year, and the red line shows the number of interlocking directors with part-time jobs at two or more firms in China from 1999 to 2017