DD

Don Duncan

WE Westvaco: 3 patents #69 of 364Top 20%
Overall (All Time): #633,693 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10632408 Removable filter for portable fan 2020-04-28
5192080 Basketball type game 1993-03-09
5123764 Utility cleaning tool for windshield wiper blades Marvin G. Duncan 1992-06-23
5041709 Attachment device for electrical discharge machine James R. Schneider, Eugene W. Petersen, John R. Benadum 1991-08-20
4643848 Modified rosin ester preparation John Thomas, Michael A. Lake, Gary Womack 1987-02-17
4548746 Rosin pentaerythritol ester preparation improvement Timothy Cameron 1985-10-22
D279544 Mud brocading tool 1985-07-09
4507228 Partial hydrogenation of tall oil rosin 1985-03-26