Patrick MacCarthy

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Design-making instrument

Geometrical instruments – Scriber – Curved line
Patent

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Interactive kaleidoscope

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Liquid kaleidoscope

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Looped-string pulley-supported yo-yo

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Manually-operated tray assembly for dispensing and receiving ove

Optics: image projectors – Slide transfer mechanism
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Profile ID: LFUS-PAI-P-194642

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