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US Patent: 508,196
Machine for grinding the edges of spectacle or eyeglass lenses
Patentees: Hugo Bilgram (exact or similar names) - Philadelphia, PA Thomas A. Willson (exact or similar names) - Reading, PA USPTO Classifications: 451/123, 451/134, 451/137, 451/460, 79/16, 82/170, 82/18 Tool Categories: Assignees: Thomas A. Willson - Reading, PA Manufacturer: Not known to have been produced Witnesses: H. D. Dunn Alfred H. Faber	Patent Dates: Applied: Aug. 04, 1892 Granted: Nov. 07, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hugo Bilgram, Bilgram Machine Works

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