Robert L. Johnstone

📍 West Boothbay Harbor, ME: #1 of 1 inventorsTop 100%

🗺 Maine: #61 of 282 inventorsTop 25%

Overall (2003): #130,312 of 273,478Top 50%

Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D475338	Motor boat	Douglas A. Zurn	2003-06-03