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US Patent: 644,430
Center Gage
Patentee:
William Johnson - Boston, MA

USPTO Classifications:
33/673

Tool Categories:
layout tools : marking gauges : center marking gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
George A. Walsh
K. T. Butler
George O. G. Coale
E. A. Guild

Patent Dates:
Applied: Dec. 06, 1898
Granted: Feb. 27, 1900

Patent Pictures:
USPTO pdf tiff
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