USD743536SActiveUtility

Respirator mask having a circular button

30
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Feb 27, 2015Filed: Feb 27, 2015Granted: Nov 17, 2015
Est. expiryFeb 27, 2035(~8.6 yrs left)· nominal 20-yr term from priority
Inventors:David M. BlombergWilliam A. Mittelstadt
30
PatentIndex Score
0
Cited by
129
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for a respirator mask having a circular button, as shown and described.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.