John H. Porter

📍 Colchester, VT: #202 of 432 inventorsTop 50%

🗺 Vermont: #2,192 of 4,968 inventorsTop 45%

Overall (All Time): #2,368,444 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4358960	Differential fiber optic proximity sensor	—	1982-11-16
4210029	Differential fiber optic differential pressure sensor	—	1980-07-01