Core drill attachment
Description
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Claims
The ornamental design for a core drill attachment, as shown and described.
Referenced Cited
U.S. Patent Documents
D466139 | November 26, 2002 | Kim |
D620035 | July 20, 2010 | Eades |
D644327 | August 30, 2011 | Singh |
D752662 | March 29, 2016 | Hoop |
D831082 | October 16, 2018 | Hoop |
20060137889 | June 29, 2006 | Hanke |
20170152711 | June 1, 2017 | Boswell |
20200332843 | October 22, 2020 | Hollander |
Patent History
Patent number: D921072
Type: Grant
Filed: May 17, 2018
Date of Patent: Jun 1, 2021
Inventor: Kjell Andersson (Kil)
Primary Examiner: Richard E Chilcot
Application Number: 35/505,675
Type: Grant
Filed: May 17, 2018
Date of Patent: Jun 1, 2021
Inventor: Kjell Andersson (Kil)
Primary Examiner: Richard E Chilcot
Application Number: 35/505,675
Classifications
Current U.S. Class:
Drilling (7) (D15/132)