P
USD674152SActiveUtilityPatentIndex 71

Protective helmet

Assignee: 3M INNOVATIVE PROPERTIES COPriority: Mar 12, 2012Filed: Mar 12, 2012Granted: Jan 8, 2013
Est. expiryMar 12, 2032(~5.7 yrs left)· nominal 20-yr term from priority
Inventors:DANIELS BJOERNJUHLIN OSKARBIRATH MARTIN L EOLSSON HENRIKEKE KRISTIAN N
71
PatentIndex Score
5
Cited by
10
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a protective helmet, as shown and described.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.