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US Patent: 916,347
Traveling-excavator-frame structure
Patentee: Louis Mayer (exact or similar names) - Mankato, MN USPTO Classifications: 280/81.1 Tool Categories: construction machines : excavators Assignees: None Manufacturer: Mayer Bros. Co. - Mankato, MN Witnesses: H. D. Kilgore M. E. Roney	Patent Dates: Applied: Mar. 12, 1908 Granted: Mar. 23, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Mayer Bros. Co.

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