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US Patent: 2,921,553
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Patentee: Frederick O. Luenberger (exact or similar names) - Los Angeles, CA USPTO Classifications: 116/308, 116/311, 116/318, 123/634 Tool Categories: Assignees: U. S. Electrical Motors, Inc. - Los Angeles, CA Manufacturer: U. S. Electrical Motors, Inc. - Los Angeles, CA Witnesses: Unknown	Patent Dates: Applied: Nov. 12, 1957 Granted: Jan. 19, 1960 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for U.S. Electrical Mfg. Co. | U.S. Electrical Motors, Inc.

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