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US Patent: 1,108,940
Collector-ring
Patentee: Charles William Starker (exact or similar names) - Pittsburgh, PA USPTO Classifications: 310/232, 439/13 Tool Categories: electrical devices : electric motors : induction motors Assignees: Westinghouse Electric & Mfg. Co. - Pittsburgh, PA Manufacturer: Westinghouse Electric & Mfg. Co. - Pittsburgh, PA Witnesses: B. B. Hines Theobald C. Weirs	Patent Dates: Applied: Dec. 06, 1912 Granted: Sep. 01, 1914 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Westinghouse Electric & Mfg. Co.
Description: Seen on a 3 HP 3-phase Westinghouse induction motor along with numerous other patents spanning 1898 to 1915.

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