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US Patent: 660,760
Tapping-machine
Patentee: Oscar Mueller (exact or similar names) - Decatur, IL USPTO Classifications: 137/317 Tool Categories: metalworking machines : drilling and boring : tapping machines Assignees: H. Mueller Mfg. Co. - Decatur, IL Manufacturer: Not known to have been produced Witnesses: Ernest Skelley Haubert Black	Patent Dates: Applied: Aug. 30, 1900 Granted: Oct. 30, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: "This invention relates to machines for drilling, tapping and inserting corporation-cocks in pipes in which water is under pressure..."

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