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US Patent: 756,461
Micrometer Calipers
Patentee:
Hyacinthe O. Borduas (exact or similar names) - Haverhill, MA

USPTO Classifications:
33/815, 33/818

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometers

Assignees:
Theodore L. Provost - Haverhill, MA

Manufacturer:
Not known to have been produced

Witnesses:
H. B. Davis
Maud M. Piper
Louis H. Harriman

Patent Dates:
Applied: Jan. 02, 1904
Granted: Apr. 05, 1904

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