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US Patent: 754,287
Pressure Indicator
Patentees: Albert De Dion (exact or similar names) - Puteaux, Hauts-de-Seine Department, Île-de-France Région, France Georges Bouton (exact or similar names) - Puteaux, Hauts-de-Seine Department, Île-de-France Région, France USPTO Classifications: 346/4 Tool Categories: propulsion and energy : steam apparatus : steam engine indicators industrial tools : pressure indicators Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 18, 1903 Granted: Mar. 08, 1904 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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