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US Patent: 1,323,267
Precision Boring Machine
Patentee:
Bengt M.W. Hanson (exact or similar names) - Hartford, CT

USPTO Classifications:
408/16

Tool Categories:
metalworking machines : drilling and boring : vertical boring mills

Assignees:
Pratt & Whitney Co. - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Jul. 09, 1917
Granted: Dec. 02, 1919

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Pratt, Whitney & Co.
Description:
S. J. Teller - patent attorney

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