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CA Patent: CA-475,169
Safety valves
Patentee: Theodore W. Bergquist (exact or similar names) - Willow Grove, PA USPTO Classifications: Tool Categories: propulsion and energy : steam apparatus : steam safety valves Assignees: J. E. Lonergan Co. - Philadelphia, PA Manufacturer: J. E. Lonergan Co. - Philadelphia, PA Witnesses: Unknown	Patent Dates: Granted: Jul. 10, 1951 Patent Pictures: CIPO Data Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for J. E. Lonergan Co.

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