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Patent
   D254125
Priority
Feb 03 1977
Filed
Jun 28 1977
Issued
Feb 05 1980
Expiry
Feb 05 1994
Inventors
Powell, Ch…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
3
References
5
Maint.:
n/a
The ornamental design for a plotting instrument, substantially as shown and described.

FIG. 1 is a top plan view of a plotting instrument showing my new design;

FIG. 2 is a top left front perspective view thereof;

FIG. 3 is a bottom right rear perspective view thereof.
INVENTORS:

Powell, Christopher M.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D288788, Sep 19 1983 Compagnie Industrielle des Lasers Cilas Alcatel Magnetic compass
D298651, May 10 1985 Pharmacia AB Nomogram for calculating the maximum tolerable blood loss of a patient
D317877, May 30 1989 Navigational aid
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3448920,
3535790,
3540127,
3646681,
3724079,
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