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US Patent: 1,810,747
Differential Gear
Patentee: George H. Benzon, Jr. (exact or similar names) - Jenkintown, Montgomery County, PA USPTO Classifications: 74/410 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking power transmission Assignees: William Sellers & Co., Inc. - Philadelphia, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 14, 1928 Granted: Jun. 16, 1931 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for William Sellers & Co.

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