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Metal halide discharge lamp
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Patent number 6,639,341
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Issue date Oct 28, 2003
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Matsushita Electric Works, Ltd.
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Kazuhiko Sakai
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H01 - BASIC ELECTRIC ELEMENTS
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Electrodeless discharge lamp
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Patent number 5,519,285
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Issue date May 21, 1996
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Matsushita Electric Works, Ltd.
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Shin Ukegawa
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H01 - BASIC ELECTRIC ELEMENTS
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Metal vapor discharge lamp
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Patent number 5,500,571
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Issue date Mar 19, 1996
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Matsushita Electric Works, Ltd.
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Atsunori Okada
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H01 - BASIC ELECTRIC ELEMENTS
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High pressure discharge lamp
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Patent number 4,724,361
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Issue date Feb 9, 1988
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Matsushita Electric Works, Ltd.
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Shigeaki Wada
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H01 - BASIC ELECTRIC ELEMENTS