ES

Ellen R. Schalkowsky

SI Spiral System Instruments: 1 patents #2 of 3Top 70%
📍 Bethesda, MD: #1,332 of 2,269 inventorsTop 60%
🗺 Maryland: #19,431 of 35,612 inventorsTop 55%
Overall (All Time): #4,014,248 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4514495 Method for testing microbial interaction with growth affecting substances Samuel Schalkowsky 1985-04-30