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US Patent: 728,423
Floor surfacer, cleaner, and polisher
Patentees: Samuel B. Zimmer (exact or similar names) - Oakland, CA John H. Prugh (exact or similar names) - Oakland, CA Aaron T. Spence (exact or similar names) - Alameda, CA USPTO Classifications: 451/352 Tool Categories: woodworking machines : sanding machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Fred B. Wood Henry Parker	Patent Dates: Applied: Feb. 24, 1902 Granted: May 19, 1903 Reissue Information: Reissued as RE12,681 (Aug. 20, 1907) Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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