RC

Robert M. Chapman

NG National Gypsum: 2 patents #2 of 4Top 50%
📍 Shillington, PA: #1 of 8 inventorsTop 15%
🗺 Pennsylvania: #313 of 3,759 inventorsTop 9%
Overall (1989): #17,379 of 140,708Top 15%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4843771 Wall trim member Robert J. Menchetti 1989-07-04
4843784 Integral wallboard and stud Robert J. Menchetti, Richard P. Weir 1989-07-04