Claims (1)
Claim 1 (Independent)
The ornamental design for a protective helmet, as shown and described.
Full Description
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FIG. 1 is a front perspective view of a protective helmet showing my new design;
FIG. 2 is a front elevation view of the protective helmet of FIG. 1 ;
FIG. 3 is a rear elevation view of the protective helmet of FIG. 1 ;
FIG. 4 is a right side view of the protective helmet of FIG. 1 ;
FIG. 5 is a left side view of the protective helmet of FIG. 1 ;
FIG. 6 is a top view of the protective helmet of FIG. 1 ; and,
FIG. 7 is a bottom view of the protective helmet of FIG. 1 .
The broken lines shown in the drawings represent portions of the protective helmet that form no part of the claimed design.
Citations
This patent cites (50)
- US2579942
- US3082428
- US3822698
- US4136688
- US4843642
- US6016805
- US6102033
- US6481019
- US6990691
- USD567366
- USD574486
- USD584010
- USD587858
- USD590547
- USD590548
- USD595014
- USD597260
- USD597710
- USD612544
- US7752682
- US8056152
- USD660522
- US8166575
- USD668758
- USD681282
- US8534279
- USD690882
- USD707894
- USD710546
- US9127691
- USD758563
- USD774702
- USD778507
- USD802117
- US9848667
- US9861529
- USD825739
- US10193588
- US10219579
- USD846809
- USD857999
- USD881380
- USD899698
- US20070245467
- US20100132703
- US20100263671
- US20160175624
- US20170251745
- US20210153594
- US6186861