“…18 To determine which types of patents to include in this measure, I sample the largest SBIR agency's (Department of Defense) award winners from the SBA Tech-Net Database. I present results where the patent count control variable includes total patent applications for the following two-digit Hall, Jaffe, and Trajtenberg (2001) technology categories: gas (13), communications (21), computer hardware and software (22), computer peripherals (23), information storage (24), electrical devices (41), electrical lighting (42), measuring and testing (43), nuclear and x-rays (44), power systems (45), semiconductor devices (46), miscellaneous electronics (49), materials processing and handling (51), metalworking (52), motors (53), optics (54), transportation (55), miscellaneous mechanical (59), and heating (66). I also check the results using all patent applications, and the results are nearly identical.…”