by Marie F. List, executrix

RA Railway Engineering Associates: 1 patents #2 of 2Top 100%

📍 Yardley, PA: #430 of 643 inventorsTop 70%

🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%

Overall (All Time): #3,798,431 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5315934	Constant contact side bearings with spring biased sliding wedges	Harold A. List	1994-05-31