The exact page text, read by your browser's voice.
ROW 297 · LEG 50 ITEM 2 · DUG NOVEMBER 2026
The test, run as the audit directs: the Fort Wayne templates — magnet-wire enamel, the turbosupercharger, satellite weather instruments — were each tested for an Osceola equivalent and return nothing; no such line stands on this ground, and the negative prints. What the ground does hold, tested at its result, is two industry lines whose inventors' residences are here and whose works were not. Strand one, audio: the Crown DC300 of 1967, the amplifier the trade press and its maker call the first reliable high-power solid-state power amplifier, was designed by Gerald R. Stanley — from 2003 at the latest an Osceola resident on his own patent faces, with a home laboratory (row #299). The invention itself is Elkhart-seated: designed at Crown International in Elkhart, on work Stanley began as a Michigan State undergraduate in the summers of 1964–66, and patented as U.S. 3,493,879 in 1970. No residence evidence places Stanley in Osceola in 1967–70, and the DC300 patent is therefore not claimed for this ground; what is claimed, face by face, is his later amplifier work patented from an Osceola residence (row #296). Strand two, diagnostics: the Miles/Ames test-device line — the hue-generating glucose test devices and ion assays of rows #296 and #303 — was industry product, the visual-read chemistry of the diabetes-testing era, and its inventors' faces seat three of its chemists (Charlton, Warchal, and the reflectance standard's Hernicz) on Osceola streets in 1984–92, while the proprietor and plant stood in Elkhart. In both strands the honest sentence is the same, and it is this ground's actual industrial shape: Osceola housed the inventors; Elkhart housed the works. A town of 2,590 with no factory of its own in either line is not thereby invention-less, and the residence record is the record it has. Closure: DUG — both industry lines carried whole with the invented-here / resident-here strands unmerged; the template classes (magnet wire, turbosupercharger, weather instruments) tested and printed negative.
Sources: as row #296 for the patent faces; Crown Audio's own technology history (the DC300 patent and Stanley's product lines); ProSoundWeb, "The Crown DC300 Amplifier Leads The Solid-State Revolution" (Stanley's own account of the design's student-summer origin and of U.S. 3,493,879); Harman International's Engineers Week profile of Stanley (the home laboratory; 49 patent families); trade and association records as cited at row #299.