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US Patent: 3,141,335
Pressure relief means for gauges
Patentee: Norman J. Smith (exact or similar names) - Churchville, PA USPTO Classifications: 73/738 Tool Categories: gauges : vacuum and pressure gauges propulsion and energy : steam apparatus : stationary boilers : steam pressure gauges Assignees: J. E. Lonergan Co. - Philadelphia, PA Manufacturer: J. E. Lonergan Co. - Philadelphia, PA Witnesses: Unknown	Patent Dates: Applied: Jan. 04, 1961 Granted: Jul. 21, 1964 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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