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US Patent: 234,709
Leveling-Instrument
Patentee: John W. Harmon (exact or similar names) - Boston, MA USPTO Classifications: 33/292 Tool Categories: layout tools : levels Assignees: None Manufacturer: Not known to have been produced Witnesses: R. H. Eddy William W. Lunt	Patent Dates: Applied: Oct. 04, 1880 Granted: Nov. 23, 1880 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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