Patent Assignment
Reel/Frame 012318/0623
Assignment of Assignor's Interest
Recorded: 2001-11-21
Pages: 3
Assignee
3M INNOVATIVE PROPERTIES COMPANY
P.O. BOX 33427, ST. PAUL, MINNESOTA, 55133
Covered Property
(1)
Filtering Face Mask That Uses an Exhalation Valve That Has a Multi-Layered Flexible Flap