HF

Harry J. Fromell

NE North American Philips Consumer Electronics: 1 patents #30 of 80Top 40%
📍 Altoona, PA: #70 of 148 inventorsTop 50%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,103,095 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4308178 Thermionic cathode emitter coating Philip W. Ghaner 1981-12-29