David J. Speelman

PL Plasticolor: 1 patents #4 of 6Top 70%

📍 Ashtabula, OH: #43 of 94 inventorsTop 50%

🗺 Ohio: #42,657 of 73,341 inventorsTop 60%

Overall (All Time): #3,930,234 of 4,157,543Top 95%

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4839405	Ultraviolet stabilizer compositions, stabilized organic materials, and methods	Allen J. Virant	1989-06-13