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US Patent: 2,494,491
Ironclad Electromagnet with Pivoted Armature
Patentee: Oscar E. Rosaen (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 137/625.65, 335/228, 335/266, 335/272, 335/279 Tool Categories: electrical devices : electromagnets metalworking machines : metalworking machine mechanisms : hydraulic apparatus Assignees: Lodge & Shipley Machine Tool Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 25, 1946 Granted: Jan. 10, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Lodge & Shipley Machine Tool Co.

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