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The ornamental design for a protective helmet, as shown and described.
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1. Protective helmet
| Patent | Priority | Assignee | Title |
| 11064755, | Aug 30 2018 | JSP LIMITED | Safety helmet |
| D877887, | Sep 01 2018 | RPB SAFETY, LLC | Visor for helmet respirator |
| D897045, | Feb 15 2017 | JSP LIMITED | Helmet shell |
| D897047, | Feb 15 2017 | JSP LIMITED | Helmet shell |
| D900407, | May 22 2020 | Gentex Corporation | Helmet accessory mounting system |
| D907859, | Feb 05 2018 | JSP LIMITED | Visored helmet |
| D907860, | Feb 05 2018 | JSP LIMITED | Visored helmet |
| D922693, | May 22 2020 | Gentex Corporation | Mounting rail node |
| D927787, | Jan 17 2020 | E D BULLARD COMPANY | Protective helmet |
| D927788, | Jan 17 2020 | E D BULLARD COMPANY | Protective helmet |
| D950161, | Feb 05 2018 | JSP LIMITED | Visored helmet |
| D951550, | Feb 05 2018 | JSP LIMITED | Visored helmet |
| D955661, | May 22 2020 | Gentex Corporation | Mounting rail |
| D974670, | May 22 2020 | Gentex Corporation | Helmet accessory mounting system |
| D982835, | Oct 11 2021 | ZHEJIANG HIGHVIZ SAFETY SUPPLIES CO., LTD. | Safety hard hat |
| ER241, | |||
| ER5916, | |||
| ER6935, |
| Patent | Priority | Assignee | Title |
| 6125477, | Jun 25 1998 | AGV S.p.A. | Crash-helmet with device for locking and releasing movable parts |
| 7207072, | Oct 31 2002 | Forsvarets Forskningsinstitutt | Helmet |
| 8286270, | Mar 16 2009 | Danastem Sports Enr. | Helmet having a guiding mechanism for a compatible visor |
| 8806667, | Jul 13 2010 | PFANNER SCHUTZBEKLEIDUNG GMBH | Face guard for fastening to a protective helmet, in particular for forestry workers |
| D268220, | Jan 07 1981 | The Regents of the University of Michigan | Military helmet with visor |
| D300070, | Mar 07 1986 | FLEET NATIONAL BANK, AS ADMINISTRATIVE AGENT | Bicyclist's helmet |
| D336553, | Jun 29 1989 | Firma Karl Scheffer-Klute GmbH & Co. | Protective helmet |
| D567450, | Nov 18 2004 | Helmet Integrated Systems Limited | Helmet |
| D568002, | Oct 04 2006 | Mat Global Solutions, S.L. | Crash helmet |
| D632437, | Sep 03 2009 | GALVION INC | Helmet and visor assembly |
| D638169, | Sep 03 2009 | GALVION INC | Helmet and face shield assembly |
| D640010, | May 27 2009 | Mat Global Solutions, S.L. | Motorcycle helmet |
| D690882, | Feb 22 2012 | HUBIX SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA | Protective helmet |
| D701649, | Sep 27 2012 | Helmet Integrated Systems Limited | Safety helmet |
| D707894, | May 23 2013 | HUSQVARNA AB | Helmet with visor |
| D777379, | Aug 25 2014 | RPX Corporation | Head mounted display helmet |
| D781001, | Mar 09 2015 | COLAS RAIL | Helmet |
| D801587, | Sep 30 2016 | RPX Corporation | Headwear |
| D812310, | Aug 12 2016 | Cascade Maverik Lacrosse, LLC | Headgear |
| D813462, | Jun 28 2016 | Wheel Pros, LLC | Safety helmet |
| D825739, | Aug 13 2015 | JSP LIMITED | Modular powered respirator |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Date | Maintenance Fee Events |
| Date | Maintenance Schedule |