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US Patent: 1,155,176
High-speed-spindle device Cooling a grinder spindle
Patentee: Frederick D. Van Norman (exact or similar names) - Springfield, MA USPTO Classifications: 384/320, 451/488 Tool Categories: metalworking machines : grinders Assignees: Van Norman Machine Tool Co. - Springfield, MA Manufacturer: Van Norman Machine Tool Co. - Springfield, MA Witnesses: William S. Bellows G. R. Driscoll	Patent Dates: Applied: Apr. 09, 1912 Granted: Sep. 28, 1915 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Van Norman Machine Tool Co.

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