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US Patent: 126,042
Improvement in composition-stone frames for hot-air registers
Patentees: John F. Wood (exact or similar names) - Everett, MA Josiah S. Elliott (exact or similar names) - Chelsea, MA USPTO Classifications: 428/15 Tool Categories: Assignees: None Manufacturer: Union Stone Co. - Boston, MA Witnesses: John F. Brennan William W. Swan	Patent Dates: Granted: Apr. 23, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Union Stone Co.

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