Drawing sheet of US Patent 412,664 (Wikimedia Commons)
period print · 1889
LINK
SUMMARY
Wikimedia Commons archival record for the lithographed drawing sheet of Radam's US Patent 412,664 (the Microbe Killer apparatus), used as the case's object-role media asset. Commons imageinfo read 2026-06-11: Artist 'Radam, William', DateTimeOriginal 8 October 1889, LicenseShortName 'Public domain'; native size 1500 x 2250 px (downsized in place to 1066 x 1600 for the site). Contributed to Commons by the University of North Texas Libraries via the Digital Public Library of America (DPLA identifier 0f685d58137fd162e26554d3d9dc43bf; UNT Portal to Texas History ark:/67531/metapth172175). A vision inspection of the downloaded file confirmed the patent header 'W. RADAM. APPARATUS FOR IMPREGNATING LIQUIDS WITH GASES. No. 412,664. Patented Oct. 8, 1889.' over three figures of a long brick-and-cement tank, signed by the inventor with witnesses. This is a separate source record from radam-apparatus-patent-1889 (the primary-document citation of the patent text) so that the media asset's public-domain rights can be machine-verified against the Commons record; the patent's full provenance is given in radam-apparatus-patent-1889. The drawing is public domain as a work of a US patent.
NOTES
This Wikimedia Commons record is the archival source for the drawing sheet of Radam’s apparatus patent, used as the case’s object-role illustration of how the Microbe Killer was manufactured. The sheet is the lithographed figures from US Patent 412,664 (1889), contributed to Commons by the University of North Texas Libraries through the Digital Public Library of America and marked public domain. It is recorded as a separate media source from the patent’s text citation (radam-apparatus-patent-1889) so the asset’s rights resolve against the Commons record; the two describe the same document.