Richard C. G. Dark

📍 Rancho Cucamonga, CA: #6 of 11 inventorsTop 55%

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

Overall (1989): #66,299 of 140,708Top 50%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4848600	Self closing dispensing valve	—	1989-07-18