Button drill bit

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Description

FIG. 1 is a top perspective view of the button drill bit.

The button drill bit has three sides, each of which are identical to that shown in FIG. 1.

The broken lines form no part of the claimed design.

Claims

The ornamental design for a button drill bit, as shown and described.

Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D775676
Type: Grant
Filed: Jul 13, 2015
Date of Patent: Jan 3, 2017
Inventor: Edward Matti (Calgary)
Primary Examiner: Patricia Palasik
Application Number: 29/532,945
Classifications