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CA Patent: CA-151,489
Trap Valve
Patentee: John Bain Armstrong (exact or similar names) - Wilkes-Barre, Luzerne County, PA USPTO Classifications: Tool Categories: propulsion and energy : steam apparatus : stationary boilers : steam and water separators Assignees: W. H. Nicholson & Co., Inc. - Wilkes-Barre, Luzerne County, PA Manufacturer: W. H. Nicholson & Co. - Wilkes-Barre, Luzerne County, PA Witnesses: Unknown	Patent Dates: Applied: May 30, 1913 Granted: Nov. 04, 1913 Patent Pictures: CIPO Data Espacenet patent Report data errors or omissions to steward Joel Havens Vintage Machinery entry for W. H. Nicholson & Co.
Description: This is the Canadian equivalent of US patent 1,080,507.

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