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US Patent: 883,660
Measuring Calipers
Patentee: John W. Marr (exact or similar names) - Waterville, Kennebec County, ME USPTO Classifications: 33/812 Tool Categories: metalworking tools : machinist tools : measuring tools : indicating calipers Assignees: Hollingswoth & Whitney Co. - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 07, 1907 Granted: Mar. 31, 1908 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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