US D1,004,850 S
Protective helmet
James Rogers, Carlisle (GB); and James A. Chilson, Ketchum, ID (US)
Assigned to Studson, Inc., Lake Oswego, OR (US)
Filed by Studson, Inc., Lake Oswego, OR (US)
Filed on Mar. 17, 2021, as Appl. No. 29/774,578.
Term of patent 15 Years
LOC (14) Cl. 02 - 03
U.S. Cl. D29—102
OG exemplary drawing
 
The ornamental design for a protective helmet, as shown and described.