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US Patent: 2,568,335
Pump lubrication for elevating screws
Patentee: William G. Hoelscher (exact or similar names) - Cincinnati, OH USPTO Classifications: 184/6.14 Tool Categories: metalworking machines : drilling and boring : drill presses : radial drill presses Assignees: American Tool Works Co. - Cincinnati, OH Manufacturer: American Tool Works Co. - Cincinnati, OH Witnesses: Unknown	Patent Dates: Applied: Jun. 29, 1945 Granted: Sep. 18, 1951 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for American Tool Works Co.

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