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Patent
   D314786
Priority
Jan 19 1988
Filed
Jan 19 1988
Issued
Feb 19 1991
Expiry
Feb 19 2005
Inventors
Chen, Chiu…
Assg.orig
DATEL ELEC…
Assg.curr
Datel Elec…
Entity
unknown
Referenced by
1
References
2
Maint.:
n/a
The ornamental design for a calculator, as shown.

FIG. 1 is a right, front and top perspective view of a calculator showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image.
INVENTORS:

Chen, Chiu Y.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D803814, Jul 22 2015 Ableton AG DJ controller
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
D255245, Jul 08 1977 Canon Kabushiki Kaisha Desk top electronic calculator
D287584, Aug 15 1984 Columbia Telecommunications Group, Inc. Telephone set
ASSIGNMENT RECORDS    Assignment records on the USPTO
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 28 1987CHEN, CHIU Y DATEL ELECTROCRAFT CORP , A CORP OF CHINAASSIGNMENT OF ASSIGNORS INTEREST 0048220340 pdf
Jan 19 1988Datel Electrocraft Corp.(assignment on the face of the patent)
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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