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US Patent: 857,979
Tachometer
Patentee: William Le Roy Bryant (exact or similar names) - Springfield, VT USPTO Classifications: 73/523 Tool Categories: industrial tools : rpm speed gauges and tachometers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Jun. 25, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Bryant Chucking Grinder Co.

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