JH

John A. Heffner

📍 Clarksburg, CA: #1 of 1 inventorsTop 100%
🗺 California: #27,528 of 67,890 inventorsTop 45%
Overall (2019): #409,441 of 560,194Top 75%
1
Patents 2019

Issued Patents 2019

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10344434 Detectable warnings Kenneth Szekely, David N. Sambrook 2019-07-09