HC

Harold H. Cheffer

Ncr: 5 patents #356 of 2,952Top 15%
📍 Oviedo, FL: #252 of 1,433 inventorsTop 20%
🗺 Florida: #10,833 of 67,251 inventorsTop 20%
Overall (All Time): #1,064,098 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4780805 Low/high input voltage power supply Andrew J. Chewuk, James Gates 1988-10-25
4517470 High frequency inverter 1985-05-14
4516035 Phase synchronization and control circuit Paul M. Rhoads 1985-05-07
4488058 Snubber circuit for use in an uninterruptible power supply 1984-12-11
4484084 Power MOSFET transfer switch 1984-11-20