Perspective drawing instrument

Perspective drawing instrument
D253956

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Patent D253956
Priority May 02 1977
Filed May 02 1977
Issued Jan 15 1980
Expiry Jan 15 1994
Inventors Edlund, Ge…
Assg.orig
Assg.curr
Entity unknown
Referenced by 1
References 5
Maint.: n/a

The ornamental design for a perspective drawing instrument, as shown.

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

FIG. 2 is a bottom plan view thereof;

FIG. 3 is an edge view thereof.

Edlund, George E.

THIS PATENT IS REFERENCED BY THESE PATENTS:

Patent	Priority	Assignee	Title
D345311,	May 04 1992	Sanford Corporation	Drawing instrument

THIS PATENT REFERENCES THESE PATENTS:

Patent	Priority	Assignee	Title
2667694,
2895223,
2981004,
FR432688,
IT462469,

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