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US Patent: 2,090,495
Surface test indicator
Patentee: Eugene J. Witchger (exact or similar names) - Saginaw, MI USPTO Classifications: 33/556 Tool Categories: Assignees: Lufkin Rule Company - Saginaw, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 19, 1935 Granted: Aug. 17, 1937 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen

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