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Patent drawing - Drawing of Portable Tent and Abri Public domain  image

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Patent drawing - Drawing of Portable Tent and Abri Public domain image

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Utility Patent Drawings

Public domain photograph of electric industrial equipment, free to use, no copyright restrictions image - Picryl description

Известные патентные рисунки из Национального архива Вашингтона.

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Дата

14/10/1862
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Источник

The U.S. National Archives
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No known copyright restrictions

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portable
портативный