Found 2 3D-models for “patents” across many websites

#History#patents#innovation#filament#intellectual property#materials#CatchTheWind#3-D printing materials#windmill#restoration
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Windmill, 1884 #Catch the Wind

Windmill, 1884 #Catch the Wind

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3-D Printing Materials You Can't Patent

3-D Printing Materials You Can't Patent

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