USD175673S - Freezing point determination instrument

Info

United States Patent 0 FREEZING POINT DETERMINATION INSTRUMENT Rolf E. Darbo, Madison, Wis.

Application December 31, 1954, Serial No. 33,775

Term of patent 14 years (Cl. D52-7) Fig. 1 is a front view of a freezing point determination instrument embodying my new design;

Fig. 2 is a side view thereof looking at the instrument from the left hand side;

Fig. 3 is another side view looking at the instrument from the right hand side;

Fig. 4 is a top plan view of the instrument shown in Fig. l;

Fig. 5 is a cross-section taken on the line 5-5 of Fig. 1; and

Fig. 6 is a bottom view thereof.

The dominant features of the design reside in the solid line portions.

I claim:

Des. 175,673 Patented Sept. 27, 1955 The ornamental design for a freezing point determination instrument, as shown and described.

References Cited in the file of this patent UNITED STATES PATENTS Schmitz Feb. 21, 1950 Bieler Apr. 28, 1953 Chipley Nov. 10, 1953