Protective helmet
Description
The broken lines in the drawings depict portions of the protective helmet that form no part of the claimed design.
Claims
The ornamental design for a protective helmet, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
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Patent History
Patent number: D992827
Type: Grant
Filed: Feb 19, 2021
Date of Patent: Jul 18, 2023
Assignee: Dräger Safety AG & Co. KGaA (Lübeck)
Inventor: Lennart Wenzel (Lübeck)
Primary Examiner: Kimberly Barnes
Application Number: 29/771,107
Type: Grant
Filed: Feb 19, 2021
Date of Patent: Jul 18, 2023
Assignee: Dräger Safety AG & Co. KGaA (Lübeck)
Inventor: Lennart Wenzel (Lübeck)
Primary Examiner: Kimberly Barnes
Application Number: 29/771,107
Classifications
Current U.S. Class:
Cranial (D29/102)