Ingvar Sundell

3M: 3 patents #4,214 of 11,543Top 40%

📍 Leksand, SE: #14 of 34 inventorsTop 45%

Overall (All Time): #1,539,760 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
8537294	Automatic darkening filter apparatus and method	—	2013-09-17
8384855	Automatic darkening filter apparatus and method	—	2013-02-26
8042958	Automatic darkening filter with automatic power management	—	2011-10-25