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US Patent: 2,780,956
Circle Tolerance Gauge for Optical Comparators
Patentees:
Leon B. Fuller (exact or similar names) - Springfield, Windsor County, VT
Philip N. Welch (exact or similar names) - Chester, Windsor County, VT

USPTO Classifications:
356/392, 356/397

Tool Categories:
metalworking tools : machinist tools : measuring tools : comparators

Assignees:
Jones & Lamson Machine Co. - Springfield, Windsor County, VT

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 28, 1955
Granted: Feb. 12, 1957

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Jones, Lamson & Co.

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