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US Patent: 3,034,220
Micro-precision level
Patentee: William B. Fell (exact or similar names) - Rockford, IL USPTO Classifications: 33/390 Tool Categories: layout tools : levels : machinist levels Assignees: None Manufacturer: Wm. B. Fell Co. - Rockford, IL Witnesses: Unknown	Patent Dates: Applied: Dec. 30, 1957 Granted: May 15, 1962 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: This is one of a series of improvements to patents 2,211,201 and 2,316,777.

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