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US Patent: 2,319,516
Gas flow indicator
Patentee: Clyde H. Phelps (exact or similar names) - Springfield, IL USPTO Classifications: 324/71.1, 324/724, 73/204.22 Tool Categories: Assignees: Weaver Mfg. Co. - Springfield, IL Manufacturer: Weaver Mfg. Co. - Springfield, IL Witnesses: Unknown	Patent Dates: Applied: Nov. 28, 1941 Granted: May 18, 1943 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Weaver Mfg. Co.

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