Patent drawing - for M. E. Knight's Spit Public domain  image

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Patent drawing - for M. E. Knight's Spit Public domain image

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Utility Patent Drawings

Public domain photograph of French architecture design drawing, building plan, Paris, France, free to use, no copyright restrictions image - Picryl description

Известные патентные рисунки из Национального архива Вашингтона.

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Дата

03/02/1885
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Источник

The U.S. National Archives
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No known copyright restrictions

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