USD424688SExpiredUtility

Respiratory protection mask

95
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Sep 6, 1996Filed: Nov 7, 1997Granted: May 9, 2000
Est. expirySep 6, 2016(expired)· nominal 20-yr term from priority
Inventors:John W. BryantChristopher P. HendersonDesmond T. CurranJames F. Dyrud
95
PatentIndex Score
54
Cited by
24
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a respiratory protection mask, as shown and described.

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