Industrial vacuum cleaner
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The file of this patent contains at least one drawing executed in color. Copies of this patent with color drawings will be provided by the United States Patent and Trademark Office upon request and payment of the necessary fee.
The broken lines shown in the drawings depict portions of the industrial vacuum cleaner that form no part of the claimed design.
Claims
The ornamental design for an industrial vacuum cleaner, as shown and described.
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Type: Grant
Filed: Aug 27, 2019
Date of Patent: Oct 11, 2022
Assignee: Hilti Aktiengesellschaft (Schaan)
Inventors: Tobias Koeniger (Bregenz), Matthias Mazur (Hamburg), Heiko Tullney (Aumuehle)
Primary Examiner: Amy C Wierenga
Assistant Examiner: Jennylou M Binas
Application Number: 29/703,402