Clifford N. Sellie, Sr.

📍 Northbrook, IL: #313 of 772 inventorsTop 45%

🗺 Illinois: #34,584 of 84,256 inventorsTop 45%

Overall (All Time): #2,281,646 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5557553	Computer assisted time study system	—	1996-09-17
5444674	Hand held decimal timer with improved frequency division	—	1995-08-22