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US Patent: 8,931
Window-blind machinery
Patentee: Daniel H. Thompson (exact or similar names) - Springfield, MA USPTO Classifications: 144/205, 408/30, 408/50 Tool Categories: woodworking machines : specialty woodworking machines : windowblind machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Amos C. Morse Asa L. French	Patent Dates: Granted: May 04, 1852 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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