Patent
   D721169
Priority
May 31 2012
Filed
May 31 2012
Issued
Jan 13 2015
Expiry
Jan 13 2029
Assg.orig
Entity
unknown
12
32
n/a
The ornamental design for respirator grill ribs, as shown and described.

FIG. 1 is a front perspective view showing the new design for respirator grill ribs.

FIG. 2 is a left view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Broken lines form no part of the claimed design, and any shading is provided to illustrate contour only and is not an indication of texture, gloss, etc.

Kim, Young-Jun, Moon, Jungchul, Park, Hyoungsun, Park, Kangsoo

Patent Priority Assignee Title
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D923775, Apr 24 2020 Inland Concrete Products, Inc.; INLAND CONCRETE PRODUCTS, INC Hygienic face mask
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D959643, Mar 26 2020 LG Electronics Inc. Air mask
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 31 20123M Innovative Properties Company(assignment on the face of the patent)
May 31 2012MOON, JUNGCHUL3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0282960121 pdf
May 31 2012KIM, YOUNG-JUN3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0282960121 pdf
May 31 2012PARK, HYOUNGSUN3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0282960121 pdf
May 31 2012PARK, KANGSOO3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0282960121 pdf
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