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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:
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