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Patent
   D312564
Priority
Dec 22 1988
Filed
Dec 22 1988
Issued
Dec 04 1990
Expiry
Dec 04 2004
Inventors
Tam, Sai Y.
Assg.orig
Assg.curr
Entity
unknown
Referenced by
4
References
2
Maint.:
n/a
The ornamental design for a letter opener, as shown and described.

FIG. 1 is a side elevational view of a letter opener showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.
INVENTORS:

Tam, Sai Y.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D721565, Feb 21 2013 Target Brands, Inc. Letter opener
D779289, Nov 05 2015 EASYBLADE LLC Melon carving knife
D797273, Mar 15 2013 Illinois Tool Works Inc. Air filtration device filter pin
D852005, Oct 09 2017 RAIL HOLDINGS, LLC Knife
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
183641,
230563,
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