Patent
   D930141
Priority
Jun 01 2018
Filed
Jun 01 2018
Issued
Sep 07 2021
Expiry
Sep 07 2036

TERM.DISCL.
Assg.orig
Entity
unknown
0
9
n/a
The ornamental design for an air-duct, as shown and described.

FIG. 1 is a perspective view of an air-duct showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view of the air-duct of FIG. 1 in a use configuration;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a rear view of FIG. 8;

FIG. 11 is a left side view of FIG. 8;

FIG. 12 is a right side view of FIG. 8;

FIG. 13 is a top view of FIG. 8; and,

FIG. 14 is a rear view of FIG. 8.

Lu, Biao, Pan, Cong

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5487412, May 26 1993 Schuller International, Inc. Glass fiber airduct with coated interior surface containing a biocide
7802412, Mar 19 2003 VESTAS WIND SYSTEMS A S Method of constructing large towers for wind turbines
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May 31 2018LU, BIAODURKEE HI-TECH MATERIAL WUHAN GROUP CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0462870407 pdf
May 31 2018PAN, CONGDURKEE HI-TECH MATERIAL WUHAN GROUP CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0462870407 pdf
Jun 01 2018DURKEE HI-TECH MATERIAL (WUHAN) GROUP CO., LTD.(assignment on the face of the patent)
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