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US Patent: 513,377
Instrument for Ascertaining Distances
Patentees: Victor De Ziegler (exact or similar names) - Luxemburg, German Empire Charles Hager (exact or similar names) - Luxemburg, German Empire USPTO Classifications: 33/274 Tool Categories: trade specific : surveyor Assignees: None Manufacturer: Not known to have been produced Witnesses: Gregory Phelan George W. Roosevelt F. L. Middleton	Patent Dates: Applied: Jun. 12, 1893 Granted: Jan. 23, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Ellis Spear - patent attorney

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