| Number | Name | Date | Kind |
|---|---|---|---|
| D321857 | Blaisdell et al. | Nov 1991 | |
| D362733 | Murata | Sep 1995 | |
| 4399390 | Oshita et al. | Aug 1983 | |
| 4495443 | Cummings | Jan 1985 | |
| 4713019 | Gaynor | Dec 1987 | |
| 4739454 | Federgreen | Apr 1988 | |
| 4936789 | Ugalde | Jun 1990 | |
| 5320548 | Schadhauser | Jun 1994 | |
| 5390096 | DeKleine et al. | Feb 1995 | |
| 5759054 | Spadafore | Jun 1998 |
| Number | Date | Country |
|---|---|---|
| 466808 | Jan 1947 | CAX |
| Entry |
|---|
| Rea, Mark S., Ph.D. Fies, Lighting Handbook, 8.sup.th ed., reprinted 1995, Illuminating Engineering Society of North America, New York, pp. 197-217. |