JH

John J. Hannaford

NP National Railroad Passenger: 3 patents #5 of 48Top 15%
📍 Downingtown, PA: #176 of 472 inventorsTop 40%
🗺 Pennsylvania: #23,606 of 74,527 inventorsTop 35%
Overall (All Time): #1,627,694 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6052884 Conveyorized system for rebuilding tread and disc brake actuator units for use in railway cars Adam Steckler, Charlie Pope, Norris Macklin, Karl Ginther 2000-04-25
5936153 Apparatus and method for testing brake actuator units used in railroad cars Adam Steckler, Charlie Pope, Norris Macklin 1999-08-10
4649971 Crosstie boring apparatus John Cunningham 1987-03-17