DH

Donald H. Holdt

CT Cambridge Technologies: 3 patents #1 of 2Top 50%
CH Chemed: 1 patents #10 of 28Top 40%
🗺 Maryland: #6,535 of 35,612 inventorsTop 20%
Overall (All Time): #1,062,599 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4795214 Convertible wheelchair/litter 1989-01-03
4691962 Convertible wheelchair/litter 1987-09-08
4632450 Convertible wheelchair/litter 1986-12-30
4346487 Quick release manual type Fowler for hospital stretchers Donald B. Morgan 1982-08-31
4222131 Hook type fowler for hospital stretchers James S. Sims, Jr. 1980-09-16