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US Patent: 130,188
Improvement in Gear Cutting Machines
Patentee:
Robert Cairns (exact or similar names) - Waterbury, New Haven County, CT

USPTO Classifications:
409/56, 409/61, 409/61409

Tool Categories:
metalworking machines : gear making machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Aug. 06, 1872

Patent Pictures:
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