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US Patent: 114,129
Improvement in self-oiling pulleys
Patentees: Henry J. Colburn (exact or similar names) - Fitchburg, MA James Goodrich (exact or similar names) - Fitchburg, MA USPTO Classifications: 384/392 Tool Categories: industrial machines : industrial machine mechanisms : industrial machine pulleys and belt drive mechanisms Assignees: None Manufacturer: Rollstone Machine Works - Fitchburg, MA Witnesses: T. C. Day J. S. Brown	Patent Dates: Granted: Apr. 25, 1871 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Rollstone Machine Works

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