Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680003 | Coiled-coil filament design for an incandescent lamp | Robert J. Kellner, Joseph P. Lagermasini, III, Bernard W. Rachel | 1997-10-21 |
RH
Robert W. Hartwick
Overall (All Time): #3,727,687 of 4,157,543Top 90%
1
Patents All Time