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Patent drawing - Drawing of Combined Military Cloak and Mattress Public domain image
Zusammenfassung
Utility Patent Drawings
Public domain photograph - United States military, propaganda free to use, no copyright restrictions image - Picryl description
Berühmte Patentzeichnungen aus dem National Archives, Washington DC
Tags
Datum
10/12/1861
Quelle
The U.S. National Archives
Copyright-info
No known copyright restrictions
