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US Patent: 900,531
Lens measuring instrument
Patentee: Franklin Hardinge (exact or similar names) - Chicago, IL USPTO Classifications: 33/507 Tool Categories: Assignees: Geneva Optical Co. - Chicago, IL Manufacturer: Not known to have been produced Witnesses: Charles J. Schmidt George E. Higham	Patent Dates: Applied: Nov. 17, 1906 Granted: Oct. 06, 1908 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hardinge Brothers

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