Frederick J. Robertson

📍 Vancouver, WA: #502 of 1,812 inventorsTop 30%

🗺 Washington: #23,018 of 76,902 inventorsTop 30%

Overall (All Time): #1,223,445 of 4,157,543Top 30%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
8910437	Cornerbead structure	—	2014-12-16
6438914	Drywall trim piece	—	2002-08-27
6363673	Drywall trim piece	—	2002-04-02
6155011	Finish material for window openings	—	2000-12-05