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Patent
   D243603
Priority
Sep 13 1974
Filed
Sep 13 1974
Issued
Mar 08 1977
Expiry
Mar 08 1991
Inventors
Salsgiver,…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
1
References
0
Maint.:
n/a
The ornamental design for educational chromatograph, as shown and described.

FIG. 1 is a perspective view showing the educational chromatography according to my design.

FIG. 2 is a view in rear elevation.

FIG. 3 is a view in right side elevation.

FIG. 4 is a view in left side elevation.
INVENTORS:

Salsgiver, John P.

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D549286, Jun 27 2006 ESSILOR INTERNATIONAL COMPAGNIE GENERALE D OPTIQUE Demonstrator of optical phenomena in a case
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