RR

Robert C. Ritchie

DI Dart Industries: 1 patents #199 of 354Top 60%
📍 Braintree, MA: #81 of 219 inventorsTop 40%
🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%
Overall (All Time): #2,287,221 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D358751 Beveling tool for smoothing and shaping ceramic articles Jacqueline A. Kemp, Bruno S. Smilgys 1995-05-30
4690789 Refrigerant cooled plastic molding, method and apparatus Henry J. McKone, Richard H. Stamm 1987-09-01