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Patent
D921072
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Priority
Nov 22 2017
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Filed
May 17 2018
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Issued
Jun 01 2021
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Expiry
Jun 01 2036
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Assg.orig
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Entity
unknown
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2
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8
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n/a
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The ornamental design for a core drill attachment, as shown and described.
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2.1 : Back
2.2 : Front
2.3 : Top
2.4 : Right
2.5 : Bottom
View 2.1 : back view of core drill attachment; 2.2 front view thereof; 2.3 top view thereof; 2.4 right view thereof; 2.5 bottom view thereof.
Andersson, Kjell
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