WH

William H. Henrich

TI Thomas Industries: 3 patents #14 of 97Top 15%
📍 Cookeville, TN: #98 of 316 inventorsTop 35%
🗺 Tennessee: #5,688 of 20,272 inventorsTop 30%
Overall (All Time): #1,671,874 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4873471 High frequency ballast for gaseous discharge lamps Thomas E. Dean, David Matthew Fischer, Lawrence J. Stratton, Herbert E. Pietsch 1989-10-10
4791338 Fluorescent lamp circuit with regulation responsive to voltage, current, and phase of load Thomas E. Dean 1988-12-13
4414493 Light dimmer for solid state ballast 1983-11-08