Patent
   D881846
Priority
Dec 06 2017
Filed
Jun 06 2018
Issued
Apr 21 2020
Expiry
Apr 21 2035
Assg.orig
Entity
unknown
6
50
n/a
The ornamental design for vibration diaphragm for loudspeaker, as shown and described.

FIG. 1 is a perspective view of a vibration diaphragm for loudspeaker, showing the 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 sectional view taken along line A-A of FIG. 6; and,

FIG. 9 is a partial enlarged view of area B of FIG. 8.

Chen, Zhi

Patent Priority Assignee Title
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D964321, Aug 23 2019 Tymphany Acoustic Technology Limited Waveguide
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D977457, Aug 23 2019 Tymphany Acoustic Technology Limited Waveguide
D986857, Aug 23 2019 Tymphany Acoustic Technology Limited Waveguide
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 31 2018CHEN, ZHIPREMIUM LOUDSPEAKERS HUI ZHOU CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0463870447 pdf
Jun 06 2018Tymphany Acoustic Technology (Huizhou) Co., Ltd.(assignment on the face of the patent)
Dec 25 2018PREMIUM LOUDSPEAKERS HUI ZHOU CO , LTD TYMPHANY ACOUSTIC TECHNOLOGY HUIZHOU CO , LTD CHANGE OF NAME SEE DOCUMENT FOR DETAILS 0491210317 pdf
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