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Glasses frame structure
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Patent number 10,012,845
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Issue date Jul 3, 2018
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Gem Optical Co., Ltd.
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Yen-Hung Huang
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G02 - OPTICS
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Magnifier
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Patent number D785065
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Issue date Apr 25, 2017
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Gem Optical Co., Ltd.
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Yen-Hung Huang
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D16 - Photography and optical equipment
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Loupe
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Patent number D753747
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Issue date Apr 12, 2016
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Gem Optical Co., Ltd.
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Yen-Hung Huang
-
D16 - Photography and optical equipment
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Magnifying glass with light
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Patent number D654107
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Issue date Feb 14, 2012
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Gem Optical Co., Ltd.
-
Yen-Hung Huang
-
D16 - Photography and optical equipment
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-
-
-
-
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Magnifying device
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Patent number D458287
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Issue date Jun 4, 2002
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Gem Optical Co., Ltd.
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Tsung-Hui Huang
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D16 - Photography and optical equipment
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Head magnifying glass
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Patent number 6,116,729
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Issue date Sep 12, 2000
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GEM Optical Co., Ltd.
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Tsung-Hui Huang
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G02 - OPTICS