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US Patent: 1,871,494
Grinding and polishing machine
Patentee: Gustave A. Carlson (exact or similar names) - Detroit, MI USPTO Classifications: 279/2.18, 279/8, 451/216, 451/227 Tool Categories: specialty machines : polishing and buffing machinery Assignees: None Manufacturer: Acme Mfg. Co. (Michigan) - Detroit, MI Witnesses: Unknown	Patent Dates: Applied: Jun. 20, 1930 Granted: Aug. 16, 1932 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Acme Mfg. Co. (Michigan)
Description: This machine is adapted for polishing hemispherical and parabolic shells such as automobile headlight enclosures.

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