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US Patent: 597,000
Screw union or coupling Pipe coupling
Patentee: Clinton Allen Higbee (exact or similar names) - Philadelphia, PA USPTO Classifications: 285/333, 285/382.1, 285/382.4, 285/390, 411/309, 411/924, 411/930 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: Charles F. Ziegler D. Stewart	Patent Dates: Applied: May 12, 1897 Granted: Jan. 11, 1898 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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