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US Patent: 236,119
Pencil-sharpening machine
Patentee: Henry Van Houser (exact or similar names) - Dayton, OH USPTO Classifications: 144/28.72 Tool Categories: household : pencil sharpeners Assignees: Henry Van Houser - Dayton, OH John David Arnold - Dayton, OH Manufacturer: Not known to have been produced Witnesses: Patrick H. Gunckel Charles M. Peck	Patent Dates: Applied: Mar. 13, 1880 Granted: Dec. 28, 1880 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: According to the Office Museum website this patent pencil sharpener is not known to have been manufactured.

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