Patents/Inventors

David P. Knivsland

North St. Paul, MNUS1 patent

2 Patents

US120706332024
Unitary Respirator with Molded Thermoset Elastomeric Elements
3M Innovative Properties Company
0 cites
US117015282023
Unitary Respirator with Molded Thermoset Elastomeric Elements
3M Innovative Properties Company
0 cites