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Christopher A. Down

HA Hasbro: 1 patents #190 of 447Top 45%
📍 Beverly, MA: #308 of 490 inventorsTop 65%
🗺 Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #3,726,859 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5676374 Toy staircase game apparats and method David W. Bossa, Edward J. Estabrook, Ralph J. Kulesza, Wayne A. Kuna 1997-10-14