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US Patent: 687,827
Record Motor for Engine Indicators
Patentee: Alva T. Hill (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 346/136, 346/4, 74/810.1 Tool Categories: propulsion and energy : steam apparatus : steam engine indicators Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 17, 1901 Granted: Dec. 03, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens The Story of the Steam Engine Indicator

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