John T. Butler

📍 Long Beach, CA: #22 of 80 inventorsTop 30%

🗺 California: #2,144 of 10,592 inventorsTop 25%

Overall (1989): #96,310 of 140,708Top 70%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4824054	Railroad switch stand	Edward Kohake	1989-04-25