Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5630764 | Illuminated golf club head | — | 1997-05-20 |
| 5385295 | Signalling device | — | 1995-01-31 |
| 4990804 | Self-luminous light source | — | 1991-02-05 |
| 4985662 | Low voltage lamp switcher circuit | Martin E. G. Willcocks | 1991-01-15 |
| 4922393 | Lamp apparatus | — | 1990-05-01 |
| 4888494 | Electromechanical lamp switching | Martin E. G. Willcocks | 1989-12-19 |
| 4794271 | Power control method and apparatus | — | 1988-12-27 |
| 4704664 | Lamp apparatus | — | 1987-11-03 |
| 4698930 | Film holder | — | 1987-10-13 |
| 4700110 | Lamp switching | Martin E. G. Willcocks | 1987-10-13 |
| 4641228 | Lamp mounting apparatus and method | — | 1987-02-03 |
| 4595969 | Lamp mounting apparatus and method | — | 1986-06-17 |
| 4520436 | Lamp apparatus | James C. Helling | 1985-05-28 |