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Drill Bit and Sample Taking Device
Patent for
Date:
December 5, 1922
Creator:
Humason, Granville A. & Barraco, Paul J.
System:
The Portal to Texas History
Excavating Bucket.
Patent for an "excavating bucket designed for use in connection with an excavating machine" (lines 10-12).
Date:
December 5, 1922
Creator:
Dyke, Samuel
System:
The Portal to Texas History