Lighting – Light source – Electric light bulb
Patent
1990-10-31
1992-05-05
Lucas, Susan J.
Lighting
Light source
Electric light bulb
Patent
active
D03259943
REFERENCES:
patent: D253195 (1979-10-01), Henkel et al.
patent: 4021659 (1977-05-01), Wiley
patent: 4316241 (1982-02-01), Gulliksen
patent: 4914342 (1990-04-01), Mujahid et al.
Felstead Richard A.
Hume Roger A.
Zucchi Luciano
Lucas Susan J.
Thorn Lighting Limited
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