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US Patent: 671,568
Screw-machine
Patentee: Gustav Sittmann (exact or similar names) - Brooklyn, NY USPTO Classifications: 29/44, 29/52, 29/64, 451/398, 74/567, 74/568R Tool Categories: metalworking machines : screw machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Henry M. Wells Walter H. Pitt	Patent Dates: Applied: Mar. 28, 1900 Granted: Apr. 09, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: This patent was subsequently improved in patent 756,659, although there may not be any direct connection between the inventors.

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