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US Patent: 1,528,143
Lock Nut
Patentee: Francis B. Cockburn (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 411/294, 411/940, 411/984 Tool Categories: hardware : nut locks Assignees: Lodge & Shipley Machine Tool Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 02, 1923 Granted: Mar. 03, 1925 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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