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Patent
D848521
Priority
Apr 01 2016
Filed
Feb 23 2017
Issued
May 14 2019
Expiry
May 14 2034
Assg.orig
Entity
unknown
0
23
n/a
The ornamental design for a sound amplification device , as shown and described.
FIG. 1 is a front perspective view showing my new design;
FIG. 2 is a top view of FIG. 1 ;
FIG. 3 is a front view of FIG. 1 ;
FIG. 4 is right side view of FIG. 1 ;
FIG. 5 is a left side view of FIG. 1 ; and,
FIG. 6 is a bottom view of FIG. 1 .
The broken lines are included for the purpose of illustrating environmental structure and form no part of the claimed designs used in FIGS. 1 through 6 .
Be, Be
Patent
Priority
Assignee
Title
Patent
Priority
Assignee
Title
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Executed on Assignor Assignee Conveyance Frame Reel Doc
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