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Patent
   D728777
Priority
Oct 18 2013
Filed
Oct 18 2013
Issued
May 05 2015
Expiry
May 05 2029
Inventors
Spear, The…
Assg.orig
Lincoln Gl…
Assg.curr
Lincoln Gl…
Entity
unknown
Referenced by
12
References
9
Maint.:
n/a
The ornamental design for a helmet plenum, as shown and described.

FIG. 1 is perspective view of a helmet plenum.

FIG. 2 is a top view of a helmet plenum.

FIG. 3 is a front view of a helmet plenum.

FIG. 4 is a back view of a helmet plenum.

FIG. 5 is a bottom view of a helmet plenum.

FIG. 6 is a side view of a helmet plenum; and,

FIG. 7 is another side view of a helmet plenum.
INVENTORS:

Spear, Theresa

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D810299, Jun 09 2015 Lincoln Global, Inc. Battery of a powered air purifying respirator
D820455, Jun 09 2015 Lincoln Global, Inc. Filter cover of a powered air purifying respirator
D820456, Jun 09 2015 Lincoln Global, Inc. Belt bracket of powered air purifying respirator
D822210, Jun 09 2015 Lincoln Global, Inc. Extended battery of a powered air purifying respirator
D848077, Mar 07 2018 Lincoln Global, Inc Cover lens frame
D851841, Mar 23 2018 Lincoln Global, Inc Shield holder frame
D853044, Mar 07 2018 Lincoln Global, Inc Inner shell of a helmet
D857306, Mar 07 2018 Lincoln Global, Inc Top of helmet shell
D860546, Mar 07 2018 Lincoln Global, Inc Top shell for helmet
D881380, Oct 16 2017 Gentex Corporation Respirator
D887554, Jun 09 2015 Lincoln Global, Inc Belt bracket of a powered air purifying respirator
D947463, Jul 23 2020 Plenum tube
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
6516802, Mar 26 1999 Covidien LP Method and combination for treating sleep apnea using a cantilever mask attachment device
7556043, Oct 24 2005 PHILIPS RS NORTH AMERICA LLC Patient interface with an integral cushion and nasal pillows
7665465, Mar 25 2005 RIC Investments, LLC Headgear assembly for a respiratory support system
7814911, Oct 15 2004 SOMNETICS INTERNATIONAL, INC Nares seal
8091553, Aug 20 2002 SOMNETICS INTERNATIONAL, INC Face mask support
8127765, Aug 18 2003 RIC Investments, LLC Patient interface assembly and system using same
8858692, Apr 02 2010 3M Innovative Properties Company Filter systems including patterned optical analyte sensors and optical readers
D716505, Dec 16 2013 TECMEN ELECTRONICS CO , LTD Air supply attachment for a head belt of a welding helmet
D716506, Dec 16 2013 TECMEN ELECTRONICS CO , LTD Air supply attachment for a head belt of a welding helmet
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Oct 18 2013Lincoln Global, Inc.(assignment on the face of the patent)
Mar 02 2015SPEAR, THERESALincoln Global, IncASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0351800403 pdf
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