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US Patent: 1,975,985
Method and apparatus for grinding valve seats
Patentee: Byron F. Stowell (exact or similar names) - Springfield, MA USPTO Classifications: 451/415 Tool Categories: trade specific : vehicle repairer : vehicle mechanic : valve and seat maintenance Assignees: Van Norman Machine Tool Co. - Springfield, MA Manufacturer: Van Norman Machine Tool Co. - Springfield, MA Witnesses: Unknown	Patent Dates: Applied: Feb. 10, 1934 Granted: Oct. 09, 1934 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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