Patents
.us
Search
Marketplace
Patent My Idea
Patents
/
Inventors
David L. Ausen
Eagan, MN
US
1 patent
2 Patents
USD1100364
2025
Air Supply Attachment for a Helmet
3M Innovative Properties Company
0 cites
USD1057296
2025
Air Supply Attachment for a Helmet
3M Innovative Properties Company
0 cites