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US Patent: 161,746
Improvement in lumber
Patentee: William E. Brock (exact or similar names) - Philadelphia, PA USPTO Classifications: 144/136.1, 144/354, 144/371, 156/257, 428/106, 52/796.1, 56/284 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: Harry Smith Hubert Howson	Patent Dates: Applied: Mar. 03, 1875 Granted: Apr. 06, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: See also patent 195,338.

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