Vern Bigham

📍 North Mankato, MN: #10 of 60 inventorsTop 20%

🗺 Minnesota: #15,886 of 52,454 inventorsTop 35%

Overall (All Time): #1,263,987 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
6676111	Universal manhole cover engaging tool	—	2004-01-13
6520482	Lifting apparatus for a manhole cover	—	2003-02-18
6176469	Manhole cover engaging tools	—	2001-01-23
5775674	Lift apparatus having a pivoting pole for lifting and moving a manhole cover	—	1998-07-07