Donald E. Belden

FI Facet International: 4 patents #1 of 2Top 50%

📍 Sand Springs, OK: #9 of 81 inventorsTop 15%

🗺 Oklahoma: #2,630 of 12,736 inventorsTop 25%

Overall (All Time): #1,284,308 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
5985142	Method of making an elongated filter system	—	1999-11-16
5783067	Elongated filter system, filter element therefor and methods of making same	—	1998-07-21
5587071	Replaceable element fluid filter	—	1996-12-24
5423984	Fluid filter	—	1995-06-13