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Optical instrument
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Fremgangsmaade og apparat til at frembringe den visuelle fornemmelse af en tilsyneladende bevaegelse i et motiv paa skilte og afbildninger
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Optical magnifying apparatus
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用于测试光源参数的设备
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Illuminated form
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Optical device for cavity inspection
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양방향 손전등
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(ja)
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蓄光器
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Illuminating means
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Parapluie a manche et/ou poignee lumineux et eventuellement sonores
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Lee et al.
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Random laser from beetle elytral surface with circularly polarized light emission |
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Egg inspection device
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Lampe a bijoux
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Inspection tube for oil-level sticks
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