J. Frank Helderman

📍 Graham, NC: #16 of 67 inventorsTop 25%

🗺 North Carolina: #14,587 of 45,564 inventorsTop 35%

Overall (All Time): #1,656,031 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5366328	Assembly for inserting an attachment coil in concrete	—	1994-11-22
4635337	Method for removable anchor apparatus	—	1987-01-13
4536115	Anchor apparatus for insertion into a pre-formed hole	—	1985-08-20