HI

Henry L. Graham, II

SI Silencerco: 1 patents #11 of 15Top 75%
📍 Landrum, SC: #5 of 26 inventorsTop 20%
🗺 South Carolina: #3,569 of 15,501 inventorsTop 25%
Overall (All Time): #1,094,568 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
12410983 Firearm suppressor with components of two or more materials George Michael Derdziak 2025-09-09
10488139 Method and apparatuses for attaching devices to firearm Michael Derdziak 2019-11-26
9921021 Firearm attachment locking systems and methods 2018-03-20
8555765 Systems methods and devices for attaching a suppressor to a firearm William J. Ellison 2013-10-15