DH

Donald Hollenbeck

📍 Seaford, DE: #31 of 80 inventorsTop 40%
🗺 Delaware: #3,234 of 7,163 inventorsTop 50%
Overall (All Time): #1,936,439 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10278889 Modular self-massage apparatus Craig A. Olschansky, William Robert Hanson, Howard A. Wilson 2019-05-07
4935726 Drainage system monitoring apparatus Timothy Buro, Robert A. Rauch 1990-06-19