John R. Graber, Jr.

LG Leybold Vakuum Gmbh: 1 patents #32 of 64Top 50%

📍 Murrysville, PA: #353 of 521 inventorsTop 70%

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

Overall (All Time): #3,422,289 of 4,157,543Top 85%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
7074026	Multi-stage helical screw rotor	—	2006-07-11