Patents/Inventors

Paul A. Martinson

Maplewood, MNUS2 patents

3 Patents

USD11003642025
Air Supply Attachment for a Helmet
3M Innovative Properties Company
0 cites
USD10572962025
Air Supply Attachment for a Helmet
3M Innovative Properties Company
0 cites
US119252322024
Hearing Protector with Positional and Sound Monitoring Sensors for Proactive Sound Hazard Avoidance
3M Innovative Properties Company
0 cites