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US Patent: 89,825
Improvement in horse-powers
Patentee: James M. Albertson (exact or similar names) - New London, CT USPTO Classifications: 74/420 Tool Categories: propulsion and energy : animal powered apparatus Assignees: None Manufacturer: Not known to have been produced Witnesses: H. J. Crocker N. G. Richards	Patent Dates: Granted: May 04, 1869 Reissue Information: Reissued as RE6,247 (Jan. 26, 1875) Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Albertson & Douglass Machine Co.

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