Patent
   D520450
Priority
Dec 26 2003
Filed
Jun 15 2004
Issued
May 09 2006
Expiry
May 09 2020
Assg.orig
Entity
unknown
2
11
n/a
The ornamental design for an optical add-drop multiplexer, as shown and described.

FIG. 1 is a perspective view of an optical add-drop multiplexer showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right side view thereof, a left side view thereof being a mirror image; and,

FIG. 6 is a rear elevation view thereof.

Shiraishi, Makoto, Hayashi, Kentaro, Katsuyama, Yutaka

Patent Priority Assignee Title
D879767, May 30 2017 KOHOKU KOGYO CO., LTD. Optical communication module
D879768, May 30 2017 KOHOKU KOGYO CP., LTD. Optical communication module
Patent Priority Assignee Title
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 14 2004SHIRAISHI, MAKOTOJ S T MFG CO , LTDASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0154810416 pdf
May 17 2004HAYASHI, KENTAROJ S T MFG CO , LTDASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0154810416 pdf
May 21 2004KATSUYAMA, YUTAKAJ S T MFG CO , LTDASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0154810416 pdf
Jun 15 2004J.S.T. Mfg. Co., Ltd.(assignment on the face of the patent)
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