Number | Name | Date | Kind |
---|---|---|---|
4431942 | Thornton | Feb 1984 |
Number | Date | Country |
---|---|---|
60-220547 | Nov 1985 | JPX |
63-244547 | Oct 1988 | JPX |
2003657 | Mar 1979 | GBX |
Entry |
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ISE Lighting Handbook, 1984 Reference Volume, Kaufman & Christensen (editors) pp. 8-19-8-20; 8-39-8-41, illuminating Engineering Society of North America (1984). |