James C. Heap

TM Thrall Car Manufacturing: 2 patents #22 of 43Top 55%

📍 Hammond, IN: #83 of 261 inventorsTop 35%

🗺 Indiana: #13,671 of 33,936 inventorsTop 45%

Overall (All Time): #2,363,974 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4408542	Center sill gondola car	—	1983-10-11
4254714	Dual bottom trough gondola railway car	—	1981-03-10