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US Patent: 278,909
Pressure and vacuum gage
Patentee: Albert H. Emery (exact or similar names) - New York, NY USPTO Classifications: 73/715 Tool Categories: gauges : vacuum and pressure gauges Assignees: Emery Scale Co. - Stamford, CT Manufacturer: Yale & Towne Mfg. Co. - Stamford, CT Witnesses: Ludwig Hailer Mahlon Randolph	Patent Dates: Applied: Feb. 05, 1881 Granted: Jun. 05, 1883 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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