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US Patent: 820,807
Micrometer Calipers
Patentee: Frank G. Marbach (exact or similar names) - Medina, OH USPTO Classifications: 33/783 Tool Categories: metalworking tools : machinist tools : measuring tools : micrometers Assignees: None Manufacturer: Not known to have been produced Witnesses: Jason E. Hutchinson J. L. Lawlor Frank Spellman Ernest R. Root	Patent Dates: Applied: Jan. 16, 1905 Granted: May 15, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Prindle & Williamson - patent attorneys

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