H. Allen Zimmerman

📍 Beaverton, OR: #1,624 of 3,140 inventorsTop 55%

🗺 Oregon: #12,654 of 28,073 inventorsTop 50%

Overall (All Time): #2,259,245 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
RE35762	Optical detection of water droplets using light refraction with a mask to prevent detection of unrefracted light	—	1998-04-07
5386111	Optical detection of water droplets using light refraction with a mask to prevent detection of unrefracted light	—	1995-01-31