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US Patent: 1,287,203
Drill Tube Section
Patentees:
Peter Boyd (exact or similar names) - Beaver, PA
Augustus M. Saunders (exact or similar names) - McKeesport, PA

USPTO Classifications:
285/119, 285/333, 29/402.06

Tool Categories:

Assignees:
National Tube Co. - Pittsburgh, PA

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Mar. 26, 1918
Granted: Dec. 10, 1918

Patent Pictures:
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Description:
D. Anthony Umica - patent attorney

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