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US Patent: 1,546,138
Boring and reaming tool Expanding Cutter
Patentee: David Lambert (exact or similar names) - Cleveland, OH USPTO Classifications: 144/218, 407/31, 407/45, 408/175 Tool Categories: metalworking machines : drilling and boring : boring heads Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 15, 1923 Granted: Jul. 14, 1925 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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