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US Patent: 206,534
Improvement in the manufacture of compound lumber
Patentee: William E. Brock (exact or similar names) - New York, NY USPTO Classifications: 144/359, 144/371 Tool Categories: woodworking machines : specialty woodworking machines : wood compressing machines Assignees: Jane Thompson - Brooklyn, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 31, 1878 Granted: Jul. 30, 1878 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: This machine forms tongues and grooves by compressing rather than cutting the wood. See also patent 183,042.

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