The graph is an event-study figure titled "Effect of OSRD on Technology Cluster Patenting." The y-axis ranges from negative 10 to 40 percent and plots the change in the number of patents produced by affected technology clusters, relative to 1930. The x-axis spans the years 1930 to 1970. By 1970, the number of patents produced by affected technology clusters increased by about 30 percent relative to 1930. A shaded region represents 95% confidence interval. Source: Gross D, Sampat B. NBER Working Paper 27375