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US Patent: 849,697
Clutch
Patentees: John Johnston (exact or similar names) - Pawtucket, RI James C. Potter (exact or similar names) - Pawtucket, RI USPTO Classifications: 192/111.15, 192/75 Tool Categories: metalworking machines : metal lathes industrial machines : industrial machine mechanisms : industrial machine clutches Assignees: Potter & Johnston Machine Co. - Pawtucket, RI Manufacturer: Potter & Johnston Machine Co. - Pawtucket, RI Witnesses: Florence E. Bates James L. Jenks	Patent Dates: Granted: Apr. 09, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Potter & Johnston Machine Co.

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