Double-enveloped electric lamp
KEEFFE, WILLIAM M, KARLOTSKI, ROBERT J, KULIK, JOSEPH S, BAZIN, SIMONE P
Year of Publication 30.10.1996
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Year of Publication 30.10.1996
Patent
DOUBLE-ENVELOPED ELECTRIC LAMP
KEEFFE, WILLIAM M, KARLOTSKI, ROBERT J, KULIK, JOSEPH S, BAZIN, SIMONE P
Year of Publication 23.01.1991
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Year of Publication 23.01.1991
Patent
Double-enveloped electric lamp
KEEFFE, WILLIAM M, KARLOTSKI, ROBERT J, KULIK, JOSEPH S, BAZIN, SIMONE P
Year of Publication 08.03.1989
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Year of Publication 08.03.1989
Patent