Table 3-25. Number and percent of citations in basic patents to 



researcli literature and other patents, by source of 



citation, 1950-61 and 1962-73 



' Source is defined as the institution pertorming the cited research, or owning the cited patent 



SOURCE Franklin Pierce College Law Center and the PTC Research Foundation. Indicators of the Role of Science in 

 Patented Technology. 1974 (A study commissioned specifically for this report)- 



210 



