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The ornamental design for a portable colorimeter, as shown. |
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FIG. 1 is a perspective view of a colorimeter showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
Anderson, Mark E., Stream, Robert D., Cooper, Richard J.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Feb 20 1990 | ANDERSON, MARK E | Hach Company | ASSIGNMENT OF ASSIGNORS INTEREST | 005247 | /0950 | |
| Feb 20 1990 | COOPER, RICHARD J | Hach Company | ASSIGNMENT OF ASSIGNORS INTEREST | 005247 | /0950 | |
| Feb 20 1990 | STREAM, ROBERT D | Hach Company | ASSIGNMENT OF ASSIGNORS INTEREST | 005247 | /0950 | |
| Feb 21 1990 | Hach Company | (assignment on the face of the patent) | / |
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