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Patent drawing - Drawing of Improved Artificial Leg Public domain  image

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Patent drawing - Drawing of Improved Artificial Leg Public domain image

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Utility Patent Drawings

Public domain photograph of a patent diagram drawings, free to use, no copyright restrictions image - Picryl description

Известные патентные рисунки из Национального архива Вашингтона.

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Дата

19/05/1863
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Источник

The U.S. National Archives
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No known copyright restrictions

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artificial
искусственный