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US Patent: 857,984
Steam Calorimeter
Patentee: Lewis M. Ellison (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 374/42 Tool Categories: propulsion and energy : steam apparatus : steam calorimeters Assignees: American Steam Gauge & Valve Mfg. Co. - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 30, 1905 Granted: Jun. 25, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for American Steam Gauge Co.

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