JH

John Granville Holt

📍 Annapolis, MD: #2 of 69 inventorsTop 3%
🗺 Maryland: #305 of 4,116 inventorsTop 8%
Overall (2020): #84,412 of 565,922Top 15%
3
Patents 2020

Issued Patents 2020

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10822801 Apparatus and methods for a noninvasive roof attachment system with vertical members Mark Anthony Holt 2020-11-03
10815667 Apparatus and methods for a noninvasive roof attachment system with vertical members Mark Anthony Holt 2020-10-27
10640981 Apparatus and methods for secure, non-invasive and non-permanent surface attachment systems Mark Anthony Holt 2020-05-05