| 4914354 |
Reactor-type ballast circuit |
Edward E. Hammer |
1990-04-03 |
| 4900986 |
Ballast circuit for starting fluorescent lamps |
Edward E. Hammer |
1990-02-13 |
| 4698549 |
D.C. lamp discharge gas pumping control |
Edward E. Hammer |
1987-10-06 |
| 4654774 |
Low ripple, high power factor a-c to d-c power supply |
— |
1987-03-31 |
| 4644227 |
Three lamp ballast |
Edward E. Hammer, Dail L. Swanson |
1987-02-17 |
| 4562381 |
Starting circuit for multiple fluorescent lamps |
Edward E. Hammer |
1985-12-31 |
| RE31970 |
High efficiency ballast system for gaseous discharge lamps |
David H. Riesland, Edward E. Hammer |
1985-08-13 |
| 4425530 |
Time delay lamp ballast circuit |
Edward E. Hammer |
1984-01-10 |
| 4399391 |
Circuit for starting and operating fluorescent lamps |
Edward E. Hammer, Dail L. Swanson |
1983-08-16 |
| 4321502 |
U-Shaped discharge lamp with starting strip |
Edward E. Hammer |
1982-03-23 |
| 4316121 |
Integrally ballasted fluorescent lamp unit |
Edward E. Hammer |
1982-02-16 |
| 4185233 |
High efficiency ballast system for gaseous discharge lamps |
David H. Riesland, Edward E. Hammer |
1980-01-22 |
