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US Patent: 2,378,643
Grinding or polishing machine and contact roll therefor
Patentee: Arthur H. Losey (exact or similar names) - Kalamazoo, MI USPTO Classifications: 451/303, 474/187 Tool Categories: Assignees: Hammond Machinery Builders, Inc. - Kalamazoo, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 28, 1944 Granted: Jun. 19, 1945 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hammond Machine Co.

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