Combination hammer drill
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1.-2. Combination hammer drill
Broken lines illustrate disclaimed features and form no part of the claimed design.
Claims
The ornamental design for a combination hammer drill, as shown and described.
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Type: Grant
Filed: Jan 20, 2017
Date of Patent: Aug 6, 2019
Assignee: Hilti Aktiengesellschaft (Schaan)
Inventors: Tobias Koeniger (Bregenz), Heiko Aupperle (Oberriet), Julian Winckler (Feldkirch), Yuan Liu (Shanghai)
Primary Examiner: Eliza Z Bennett-Hattan
Application Number: 35/503,396