HD

Harold R. Diffenderfer

NH Neapco Holdings: 4 patents #1 of 16Top 7%
📍 Pottstown, PA: #83 of 315 inventorsTop 30%
🗺 Pennsylvania: #19,182 of 74,527 inventorsTop 30%
Overall (All Time): #1,305,746 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4669737 Annular shaft seal with cam portion on sealing lip 1987-06-02
4622840 Method for drawing telescoping tubes for torque transmission George S. Rowley 1986-11-18
4622022 Telescoping tubes for torque transmission George S. Rowley 1986-11-11
4568313 Protective guard for articulated shafting George S. Rowley 1986-02-04