JE

J. Calvin Elder

AS American Standard: 1 patents #12 of 44Top 30%
📍 Penn Hills, PA: #5 of 11 inventorsTop 50%
🗺 Pennsylvania: #570 of 2,652 inventorsTop 25%
Overall (1982): #57,075 of 81,411Top 75%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4323210 Manual block traffic control and signaling system for railroads — 1982-04-06