View Original: | Drawing of Arrnott's patented automatic dredger.jpg (1687x1904) | |||
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Keywords: Drawing of Arrnott's patented automatic dredger.jpg This is a patent drawing of the automatic dredger from the patent involved in Standard Sanitary Mfg Co v United States US Patent No 633941 1899 US Govt PD-USGov Original upload log en wikipedia Drawing+of+Arrnott 27s+patented+automatic+dredger jpg wikitable - 2016-04-29 02 16 1687×1904× 415251 bytes PraeceptorIP Uploading a public-domain item using File Upload Wizard Uncategorized 2016 May 5 |