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David Ball
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Austin, TX, US
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last 30 patents
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Patent Grant
Lighting device convertible between reading light and flashlight co...
Patent number
6,361,184
Issue date
Mar 26, 2002
Lumatec Industries, Inc.
Bjarki Hallgrimsson
F21 - LIGHTING
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Patent Grant
Lighting device convertible between reading light and pen light con...
Patent number
6,213,618
Issue date
Apr 10, 2001
Lumatec Industries, Inc.
Sarah Dobbin
F21 - LIGHTING