Color comparator

- Hach Company

FIG. 1 is a perspective view of a color comparator showing our new design;

FIG. 2 is a right side elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view;

FIG. 5 is a rear elevational view; and,

FIG. 6 is a front elevational view thereof.

Referenced Cited
U.S. Patent Documents
D316826 May 14, 1991 Neuman
1389836 September 1921 Mooney
1495763 May 1924 Simpson et al.
1675967 July 1928 Zitkowski
3773425 November 1973 Bentley
4073623 February 14, 1978 Bodart
Patent History
Patent number: D325881
Type: Grant
Filed: Jul 24, 1989
Date of Patent: May 5, 1992
Assignee: Hach Company (Loveland, CO)
Inventors: Scott V. Brayton (Loveland, CO), Richard D. Vanvalin (Loveland, CO), Timothy J. Gaul (Loveland, CO)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Antoine D. Davis
Attorney: Dean P. Edmundson
Application Number: 7/384,663
Current U.S. Class: Chemical (12) (D10/81)