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Patent
D739382
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Priority
Feb 22 2013
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Filed
Aug 15 2013
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Issued
Sep 22 2015
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Expiry
Sep 22 2029
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Assg.orig
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Entity
unknown
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7
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8
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n/a
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The ornamental design for an acoustic duct, as shown and described.
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FIG. 1 is a front, right side and top perspective view of an acoustic duct showing our new design;
FIG. 2 is a rear, left side and top perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines shown represent unclaimed subject matter and form no part of the claimed design.
Niho, Hiroki, Miyakura, Takashi
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Patent |
Priority |
Assignee |
Title |
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Oct 22 1975 |
Shaymar, Inc. |
Speaker system |
5844176, |
Sep 19 1996 |
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Speaker enclosure having parallel porting channels for mid-range and bass speakers |
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Jun 15 1999 |
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Bass amplifying system for radios |
20090052722, |
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D379988, |
Aug 28 1995 |
Speaker Works, Inc. |
Loudspeaker horn with rotary driver mount |
D384075, |
May 30 1996 |
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Speaker |
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Jan 31 2005 |
Hewlett-Packard Development Company, LP |
Portable computer media station |
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Date |
Maintenance Fee Events |
n/a
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Maintenance Schedule |
n/a