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US Patent: 2,432,731
Expanding head for abrasives
Patentee: Oliver S. De Haven (exact or similar names) - Beech Grove, IN USPTO Classifications: 451/506 Tool Categories: woodworking machines : sanding machines Assignees: Vonnegut Moulder Corp. - Indianapolis, IN Manufacturer: Vonnegut Moulder Corp. - Indianapolis, IN Witnesses: Unknown	Patent Dates: Applied: Jul. 26, 1946 Granted: Dec. 16, 1947 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Vonnegut Moulder Corp.

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