Lighting – Light source – Electric light bulb
Patent
1991-03-19
1993-03-23
Lucas, Susan J.
Lighting
Light source
Electric light bulb
Patent
active
D03342433
REFERENCES:
patent: D280766 (1985-09-01), Fujita et al.
patent: 3555341 (1971-01-01), Curtis
patent: 5018992 (1991-05-01), Bergin et al.
Higano Masato
Sato Tetuya
Yanagida Munehiko
Yanagiya Masakazu
Lucas Susan J.
Moriyama Sangyo Kabushiki Kaisha
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