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

description

Zusammenfassung

Utility Patent Drawings

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

Berühmte Patentzeichnungen aus dem National Archives, Washington DC

date_range

Datum

14/10/1862
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Quelle

The U.S. National Archives
copyright

Copyright-info

No known copyright restrictions

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