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US Patent: 587,930
Indicator for Lathes or Planers
Patentee:
Frank Coffin (exact or similar names) - Cambridge, Middlesex County, MA

USPTO Classifications:
33/642, 73/66

Tool Categories:
metalworking tools : machinist tools : measuring tools : dial indicator gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 20, 1896
Granted: Aug. 10, 1897

Patent Pictures:
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