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US Patent: 397,424
Connection of Electrical Circuits
Patentees: William W. Griscom (exact or similar names) - Haverford College, Mongomery County, PA Henry N. Weidner (exact or similar names) - Philadelphia, PA USPTO Classifications: 200/51.1, 307/66, 307/9.1, 439/291 Tool Categories: electrical devices : electrical connectors Assignees: Electro-Dynamic Co. - Philadelphia, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 27, 1888 Granted: Feb. 05, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Electro-Dynamic Co.

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