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US Patent: 980,019
Valve-disk-cutting machine
Patentees: Thomas B. Williams (exact or similar names) - Orange, MA Frank L. Smith (exact or similar names) - Chicago, IL USPTO Classifications: 451/430, 82/172 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: Fred A. Dexter James D. Kimball Julia S. Abbott M. Gertrude Ady	Patent Dates: Applied: Dec. 12, 1908 Granted: Dec. 27, 1910 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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