Spade drill bit
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The evenly-spaced broken lines in the drawings depict portions of the spade drill bit that form no part of the claimed design. The “dash-dot” broken lines seen in
Claims
We claim the ornamental design for the spade drill bit, as illustrated and described.
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Type: Grant
Filed: Apr 30, 2018
Date of Patent: Oct 15, 2019
Assignee: Disston Company (Chicopee, MA)
Inventors: Jeffrey Tuttle Weber (Chicopee, MA), Xuan Li (Guangzhou)
Primary Examiner: Garth Rademaker
Assistant Examiner: Fritzgerald L Butac
Application Number: 29/645,929