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US Patent: 674,107
Level-Glass
Patentee: Justus A. Traut (exact or similar names) - New Britain, CT USPTO Classifications: 33/379 Tool Categories: layout tools : levels Assignees: None Manufacturer: The Stanley Rule & Level Co. - New Britain, CT Witnesses: Sadie L Finnegan Stanley Parker J. L. Edwards, Jr. R. W. Pittmann	Patent Dates: Applied: Apr. 04, 1900 Granted: May 14, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This patent covers the use of color in the level liquid, allowing the bubble to be more easily seen.

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