Frank H. Walker

📍 Mill Valley, CA: #2 of 19 inventorsTop 15%

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

Overall (1989): #113,827 of 140,708Top 85%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4883141	Hydraulic wheel motor and pump	—	1989-11-28