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US Patent: 835,317
Floor-polishing device
Patentee: Oscar H. Ostlund (exact or similar names) - Chicago, IL USPTO Classifications: 144/38, 451/164, 451/236, 451/351 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: H. G. Batchelor Signa Feltskog	Patent Dates: Applied: May 24, 1906 Granted: Nov. 06, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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