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US Patent: 764,622
Translucent Color-Comparator or Color-Screen
Patentee: Alexander E. Outerbridge, Jr. (exact or similar names) - Philadelphia, PA USPTO Classifications: 356/43, 362/293, 362/351, 430/6 Tool Categories: metalworking tools : machinist tools : measuring tools : comparators Assignees: William Sellers & Co., Inc. - Philadelphia, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 14, 1902 Granted: Jul. 12, 1904 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for William Sellers & Co.

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