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US Patent: 455,001
Testing-yoke for safety-valves
Patentee: John E. Lonergan (exact or similar names) - Philadelphia, PA USPTO Classifications: 137/528, 137/543.13 Tool Categories: propulsion and energy : steam apparatus : steam safety valves Assignees: None Manufacturer: J. E. Lonergan Co. - Philadelphia, PA Witnesses: George E. Buckley Henry V. Buckley	Patent Dates: Applied: Mar. 24, 1891 Granted: Jun. 30, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for J. E. Lonergan Co.

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