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Patent
D849237
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Priority
Apr 24 2017
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Filed
Apr 24 2017
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Issued
May 21 2019
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Expiry
May 21 2034
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Assg.orig
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Entity
unknown
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5
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12
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n/a
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The ornamental design for a mask ventilation assist device, as shown and described.
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FIG. 1 is a perspective view of a mask ventilation assist device showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view thereof, the rear elevational view being a mirror image thereof;
FIG. 5 is an end view thereof, the opposite end being a mirror image thereof; and,
FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 2.
Rosen, Gerald P.
Patent |
Priority |
Assignee |
Title |
3058466, |
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6631718, |
Jun 08 1999 |
SleepNet Corporation |
Air mask with seal |
6736139, |
Feb 20 2003 |
|
Ventilation mask assist device |
7353827, |
Sep 01 2004 |
Vitol Signs, Inc.; Vital Signs, Inc |
Mask, mask shell and seal with improved mounting, mask seal, method of mask manufacture and mask with reduced exhalation noise |
9199054, |
Apr 23 2012 |
SleepNet Corporation |
Articulating headgear connector for respiratory masks |
20060000476, |
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20140366886, |
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20170304573, |
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160668, |
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160669, |
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178579, |
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D639420, |
Jan 08 2010 |
ResMed Pty Ltd |
Frame for a respiratory mask |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a