CP

Charles H. Popenoe

📍 Bethesda, MD: #560 of 2,269 inventorsTop 25%
🗺 Maryland: #8,004 of 35,612 inventorsTop 25%
Overall (All Time): #1,238,700 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7958614 Method of making a fastening device for visually indicating tension 2011-06-14
5189979 Fluid pressure indicator 1993-03-02
4904132 Opti-mechanical displacement indicator with high sensitivity 1990-02-27
RE30183 Radio-frequency tuned-circuit microdisplacement transducer 1980-01-08