Number | Name | Date | Kind |
---|---|---|---|
D192124 | Michaud | Jan 1962 | |
845652 | La Berge | Feb 1907 | |
2336587 | Bixby | Dec 1943 | |
3064124 | Husby et al. | Nov 1962 | |
4535393 | Aspenwall | Aug 1985 | |
4598341 | Brackhahn et al. | Jul 1986 | |
4739454 | Federgreen | Apr 1988 | |
4994943 | Aspenwall | Feb 1991 | |
5040101 | Aspenwall | Aug 1991 | |
5245518 | Aspenwall | Sep 1993 |
Entry |
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Zumtobel Lighting Inc. Spheros Indirect/Direct Luminaires Brochure, .COPYRGT.1989, Luminaire SID-C (gr. 2900--Fluorescent Lamp Box). |