John B. McMackin

RC Rca: 1 patents #895 of 1,739Top 55%

📍 Essington, PA: #5 of 5 inventorsTop 100%

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

Overall (All Time): #4,068,223 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4325021	Regulated switching apparatus	—	1982-04-13