DH

Donald Holder

AD Aquascape Designs: 1 patents #3 of 6Top 50%
CS Crane Pumps & Systems: 1 patents #6 of 28Top 25%
📍 Troy, OH: #164 of 367 inventorsTop 45%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,145,396 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7357341 Two stage sewage grinder pump Gregory J. Gutwein, Mark Kowalak, Bruce B. Ordway 2008-04-15
6821416 Pond system and related pump David R. Kelly, Matthew J. Gulisano, Allan R. Kishpaugh, Bruce B. Ordway 2004-11-23