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US Patent: 60,788
Improvement in Levels Sighting Level
Patentee: William L. Richardson (exact or similar names) - Reading, MA USPTO Classifications: 33/292, 33/386 Tool Categories: layout tools : levels Assignees: None Manufacturer: Not known to have been produced Witnesses: George W. Bliss Louis C. Rodier Edward H. Hyde J. B. Gardiner	Patent Dates: Granted: Jan. 01, 1867 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This is a design for a sighting level, such as used by masons and builders.

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