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US Patent: 3,030,710
Micro-precision levels
Patentee:
William B. Fell (exact or similar names) - Rockford, IL

USPTO Classifications:
33/385, 33/390

Tool Categories:
layout tools : levels : spirit levels

Assignees:
None

Manufacturer:
William B. Fell Co. - Rockford, IL

Witnesses:
Unknown
Patent Dates:
Applied: Jun. 06, 1956
Granted: Apr. 24, 1962

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Description:
Improvements to the inventor's patents 2,211,201 and 2,316,777.

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