OF

Otto P. Fest

📍 Tucson, AZ: #867 of 6,004 inventorsTop 15%
🗺 Arizona: #4,584 of 32,909 inventorsTop 15%
Overall (All Time): #636,806 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
10222405 Solid state analog meter Noel Smith, Andreko Lennartz 2019-03-05
9054725 Signal or loop powered automatic multicolor display and controller Noel Smith 2015-06-09
7684768 Loop powered current-loop wireless transmitter Noel Smith 2010-03-23
7626378 Signal powered A.C. current transformer electronic measuring circuit 2009-12-01
7477080 Current loop powered isolator and method 2009-01-13
6285094 Loop-powered current-loop controller and method 2001-09-04
6213832 Personal flotation device and related system for maintaining human body in partially-submerged horizontal position 2001-04-10
4908569 Transformerless line powdered digital AC voltmeter 1990-03-13