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John L. Sipsma

SL Scepter Manufacturing, Llc.: 1 patents #29 of 73Top 40%
📍 Wyoming, MI: #155 of 261 inventorsTop 60%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #3,965,030 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4792317 Method for making a magnetic shield — 1988-12-20