Patent
   D331202
Priority
Aug 29 1991
Filed
Aug 29 1991
Issued
Nov 24 1992
Expiry
Nov 24 2006
Assg.orig
Entity
unknown
1
38
n/a
The ornamental design for a triple tube viscosity testing instrument, as shown and described.

FIG. 1 is a top, front and left side perspective view of a triple tube viscosity testing instrument showing our new design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a right side elevational view;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view thereof.

FIG. 1 has been drawn on a reduced scale with respect to FIGS. 2-7.

Jeffers, David G., Pachuta, Donald G.

Patent Priority Assignee Title
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//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 29 1991Louis C. Eitzen Co., Inc.(assignment on the face of the patent)
Oct 04 1991JEFFERS, DAVID G LOUIS C EITZEN CO , INC , A CORP OF COASSIGNMENT OF ASSIGNORS INTEREST 0058870494 pdf
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