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US Patent: 2,833
Endless-chain horse-power
Patentee: Albert W. Gray (exact or similar names) - Middletown, VT USPTO Classifications: 185/16 Tool Categories: propulsion and energy : animal powered apparatus Assignees: None Manufacturer: A. W. Gray's Sons - Middletown, VT Witnesses: C. B. Harrington E. Ross	Patent Dates: Granted: Oct. 26, 1842 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for A. W. Gray's Sons
Description: A. W. Gray's Sons of Middletown, Vt., made sawing machines.

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