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US Patent: 1,576,702
Electrically Operated Bridge Crane
Patentee: Frank Ackerman (exact or similar names) - St. Louis, MO USPTO Classifications: 105/133, 105/163.2, 212/312 Tool Categories: material handling : cranes Assignees: Curtis & Co. Mfg. Co. - Wellston, St. Louis County, MO Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 31, 1924 Granted: Mar. 16, 1926 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Curtis & Co. Manufacturing Co.

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