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Patent drawing - for H. A. Whiting and W. J. Winghart's Umbrella and Cane Combined Public domain  image

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Patent drawing - for H. A. Whiting and W. J. Winghart's Umbrella and Cane Combined Public domain image

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Zusammenfassung

Utility Patent Drawings

Public domain photograph of architecture design drawing, free to use, no copyright restrictions image - Picryl description

Berühmte Patentzeichnungen aus dem National Archives, Washington DC

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Datum

29/08/1882
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Quelle

The U.S. National Archives
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No known copyright restrictions

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