Carl R. Hamman

📍 Rittman, OH: #24 of 88 inventorsTop 30%

🗺 Ohio: #23,384 of 73,341 inventorsTop 35%

Overall (All Time): #1,514,714 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
8939680	Method and structure for in situ field repair of severed drain tile	—	2015-01-27
8360293	Method for anchoring pin insertion	—	2013-01-29
8152040	Anchoring pin insertion unit and method	—	2012-04-10