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John William Speakman

📍 Toronto, CA: #46 of 253 inventorsTop 20%
Overall (1997): #125,931 of 185,788Top 70%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D387393 Clapper board box David Jonathon Mikelberg, Daniel Wilchesky 1997-12-09