Lighting – Light source – Electric light bulb
Patent
1990-10-31
1992-05-12
Lucas, Susan J.
Lighting
Light source
Electric light bulb
Patent
active
D03261611
REFERENCES:
patent: D253195 (1979-10-01), Henkel et al.
patent: 4021659 (1977-05-01), Wiley
patent: 4870551 (1989-09-01), Nagel
patent: 4914342 (1990-04-01), Mujahid et al.
Felstead Richard A.
Hume Roger A.
Zucchi Luciano
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