Granted Patent
S1
US 1,100,364 · App. 29/982,350 · Granted Oct 28, 2025
Air supply attachment for a helmet
Inventors:
Benjamin A. Johnson (Woodbury, MN); Paul A. Martinson (Maplewood, MN); Garry J. Walker (Stockton-on-Tees, GB); David J. Schmidt (Lake Elmo, MN); David L. Ausen (Eagan, MN)
Assignee:
3M Innovative Properties Company
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Claims (1)
The ornamental design for an air supply attachment for a helmet as shown and described.
Continuity (1)
Division
29833189
· Apr 1, 2022
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Cited By (2)