DZ

Douglas H. Ziegel

RC Rca: 5 patents #240 of 1,739Top 15%
📍 Indianapolis, IN: #1,176 of 5,011 inventorsTop 25%
🗺 Indiana: #7,136 of 33,936 inventorsTop 25%
Overall (All Time): #1,065,895 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4560853 Positioning and bonding a diamond to a stylus shank 1985-12-24
4391520 Technique for optical alignment of a workpiece 1983-07-05
4379510 Method and apparatus for sorting stones 1983-04-12
4321772 Levelable lapping machine 1982-03-30
4286414 Work holder 1981-09-01