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US Patent: 652,521
Machinist's Gage
Patentee:
John P. Pratt (exact or similar names) - Milford, MA

USPTO Classifications:
33/666, 33/709

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. S. Cadel
William H. Abbeiton
Wendell Williams
Levi W. Moore

Patent Dates:
Applied: Mar. 07, 1900
Granted: Jun. 26, 1900

Patent Pictures:
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