USD211574S - Photoelectric colorimeter - Google Patents

Description

United States Patent Ofiice Patent: i113 23 9::

PHOTOELECTRIC COLORIMETER Delmar F. Macaulay and Elliott E. Blank, Midland, Mich., 'assignors to The Dow Chemical Company, Midland, Mich., a corporation of Delaware Filed Apr. 4, 1967, Ser. No. 6,512

Term of patent 14 years igy z Des. 211,574

PAGE 2 FIGURE 1 is an isometric view of a photoelectric colorimeter, showing our new design;

FIGURE 2 is a front elevational view thereof;

FIGURE 3 is a side elevational view thereof;

FIGURE 4 is a top view thereof; and

FIGURE 5 is a rear view thereof.

The dominant features of our design reside in the portions shown in full lines. The side of the photoelectric colorimeter not shown is the mirror image of the side shown.

We claim:

The ornamental design for a photoelectric colorimeter, substantially as shown and described.

References Cited UNITED STATES PATENTS D. 186,661 11/1959 Baldwin et al. D16-2 D. 189,027 10/ 1960 Coleman D16-2 D. 189,593 1/1961 De Pietro D571 3,072,013 1/1963 Pratt.

OTHER REFERENCES Gardner Laboratory Cat. No. 62, received Nov. 18, 1965, p. 72, Colorimeter, item No. CG-6720.

Fisher Modern Laboratory Appliances Cat. No. 65, 1964, p. 327, electrophotometer (photoelectric colorimeter) item No. 7-103.

BERNARD ANSHER, Primary Examiner.

Images