John McMahan

OF Owens-Corning Fiberglas: 1 patents #242 of 488Top 50%

📍 Newark, OH: #255 of 391 inventorsTop 70%

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

Overall (All Time): #4,070,839 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4333291	Insulated roof structure	Dwight Musgrave, Robert L. Downing, III	1982-06-08