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US Patent: 820,028
Level
Patentee: Justus A. Traut (exact or similar names) - New Britain, CT USPTO Classifications: 33/386 Tool Categories: layout tools : levels : level adjustments Assignees: The Stanley Rule & Level Co. - New Britain, CT Manufacturer: The Stanley Rule & Level Co. - New Britain, CT Witnesses: H. S. Walter Chas. B. Stanley	Patent Dates: Applied: Oct. 23, 1905 Granted: May 08, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This is a simple screw-based adjustment for level vials. It was used on many Stanley level models, and is a commonly encountered patent marking.

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