Song Fang Yuan, Shangdixili, Haidian Dist., Beijing, China

Beijing Effiled Opto-electronics Technology Co., Ltd


USPTO Granted Patents = 2

Forward Citations = 4

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2 inventors (with patents filed for the assignee):

goldMedal Richard Landry Gray (2 out of 42 patents)

silverMedal Yu Hai Mao (1 out of 1 patent)


2 patents:

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#767 in Song Fang Yuan, Shangdixili, Haidian Dist., Beijing

#10,022 in China

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Song Fang Yuan, Shangdixili, Haidian Dist., Beijing, China
Forward Citations = 4

2 inventors:

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