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US Patent: 1,989,611
Wave Screw
Patentees: Albert H. Dall (exact or similar names) - Cincinnati, Hamilton County, OH Bernard Sassen (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 384/307, 409/160, 74/424.75, 74/467, 74/89.44 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking power transmission Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Witnesses: Unknown	Patent Dates: Applied: Apr. 05, 1933 Granted: Jan. 29, 1935 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cincinnati Milling Machine Co.
Description: This patent number was seen on a Cincinnati Milling Machine Co. patent plate 4FV-101.

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