Feng-Chi Chang

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Method for focusing by using a pre-flash

Photography – With exposure objective focusing means – focusing aid – or... – Having auxiliary illumination
Reexamination Certificate

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Rocking chair

Design Patent

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Structure for an infant's rocket

Amusement devices – Rockable animal simulation having rider seat means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2630967

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