DH

Donald W. Harrington

UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Waldoboro, ME: #4 of 14 inventorsTop 30%
🗺 Maine: #1,188 of 4,281 inventorsTop 30%
Overall (All Time): #1,626,044 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6017064 Apparatus and methods for forming lateral openings in main pipelines and restraining apparatus for main and lateral pipe joints 2000-01-25
5702129 Riser assembly for underground pipe connections 1997-12-30
D334855 Earring tree Kim Harrington 1993-04-20