DJ

Douglas F. Johnston

📍 Huntington, NY: #265 of 503 inventorsTop 55%
🗺 New York: #67,335 of 115,490 inventorsTop 60%
Overall (All Time): #3,209,869 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8192297 Variable interface putter golf club with attachable device for analyzing golf course conditions and selecting putter face Beth Johnston Perchuk, Eric Koenig 2012-06-05