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US Patent: 1,182,477
Boring-machine
Patentees: Bengt M. W. Hanson (exact or similar names) - Hartford, CT Carl L. Grohmann (exact or similar names) - Hartford, CT USPTO Classifications: 82/48 Tool Categories: metalworking machines : drilling and boring trade specific : gunsmith Assignees: Pratt & Whitney Co. - Hartford, CT Manufacturer: Pratt & Whitney Co. - Hartford, CT Witnesses: W. M. Storrs H. E. Bailey	Patent Dates: Applied: Jan. 09, 1915 Granted: May 09, 1916 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Pratt & Whitney Co.
Description: See patent 612,412 for more on co-inventor Carl L. Grohmann.

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