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US Patent: 2,173,360
Shaft Coupling
Patentee: Albert F. Froussard (exact or similar names) - St. Louis, MO USPTO Classifications: 464/93 Tool Categories: industrial machines : industrial machine mechanisms : industrial machine shaft couplings Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 01, 1938 Granted: Sep. 19, 1939 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Multiple Boring Machine Co.

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